OFFICE OF THE PRESIDENT, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT 

SECONDARY EXAMINATION SERIES

BIOLOGY FORM THREE MARCH

TIME 2:30 HOURS

Instructions

1. This paper consists of three section A, B and C with a total of eleven (11) questions.
2. Answer all questions from section A and B and two questions from section C.
3. Section A carries sixteen (16) marks, section B carries fifty four (54) marks and section C carries thirty (30) marks.
4. All writing should be in blue ink except diagrams which must be in pencil.
5. All communication devices and any unauthorized material are not allowed in the examination room.
6. Write your assessment number at the top right corner of every page.

(i) Assume your friend accidentally cut his finger, which item will you use instead of gloves to stop him from bleeding,

1. Socks. 
2. Tin. 
3. Plastic bag 
4. Paper. 
5. Piece of cloth

(ii) During a practical session Adam picked a plant which had the following characteristics; fibrous root system, non-Woody stem, vascular bundles without cambium and the flowers contained six sepals and six petals. As a biologist what class of a plant picked by Adam belongs?

1. Dicotyledonae. 
2. Angiospermorphyta. 
3. Coniferophyta
4. Monocotyledonae. 
5. Pteridophyte.

(iii) Which of the following is the site of digestion where both mechanical and chemical digestion occurs?

1. Stomach. 
2. Oesophagus. 
3. Mouth 
4. Small intestine. 
5. Duodenum

(iv) All of the following are respiratory surface EXCEPT,

1. Skin. 
2. Lung 
3. Leaves 
4. Gills. 
5. Heart

(v) Why is it advised to make thoroughly blood screening donor and recipient before blood transfusion?

1. Ensuring compatibility. 
2. Ensuring incompatibility
3. Ensuring coagulation 
4. Ensuring immunity
5. Ensuring blood groups

(vi) The heart is the major circulatory organ which is responsible for pumping of blood rhythmically without get fatigue Which type of muscles does the liehrt possess so as to ensure its efficiency of not getting fatigue?

1. Smooth muscles 
2. Skeletal muscles 
3. Cardiac muscles
4. Rough muscles 
5. Collagen muscles

(vii) The joints which allow movement in many (all) directions are;

1. Glind and hinge joints 
2. Glind and pivot joints 
3. Ball and socket joints 
4. Ball and glind joints 
5. Socket and hinge joints

(viii) A feeding relationship in which both species benefits from the relationship is known as; 

1. Commensalism 
2. Parasitism 
3. Mutualism
4. Saprophytism 
5. Symbiosis

(ix) The following is a set of raw materials for photosynthesis to occur except;

1. Water, light and oxygen 
2. Carbon dioxide and water
3. Chlorophylls and Sunlight 
4. Chlorophylls and Carbon dioxide
5. Carbon dioxide and oxygen.

(x) The third step in the scientific method is;

1. Experimentation 
2. Collecting data 
3. Identifying the problem
4. Formulating hypothesis 
5. Conclusion

2. Match the phrase in list A with response in list B by writing the letter of the correct response.

SECTION B. 70 MARKS

3. a) Explain one (1) role played by the following substances in digestion a

i) Bile

 ii) maltase enzyme  

iii) Hydrochloric acid

b) How do animals like human beings benefit from the process of photosynthesis occurring in plants.

4. A bread was put in a wet cupboard. After few days black thread like structures which ended up in a club like structures appeared in the bread.

a)   Write the common name of the organism that grew on the bread surface

b)   Name the Kingdom and phylum in which the observed organism belongs

c)   Outline four (4) advantages of the members of the Kingdom you mentioned in (b) above

5.      (a) state any three adaptations of the leaf for photosynthesis 

(b) How do the following factors affect the rate of photosynthesis? 

(i)     Chlorophyll

(ii)     Sunlight  

(iii)    Carbondioxide

6. a) An accident occurred at Mtakuja village, MR. Zuma and the fellows helped the injured people by covering up their wounds, and keeping them calm , then they sent them to the hospital. What were the four necessities of Mr. Zuma’ s actions?

b) Mention and give functions to five components of first aid kit.

7.(i) Use your biological knowledge to explain the following biological arguments;

a) Why fungi are classified in both as plants and also as animals.

b) Why most of Bryophytes do not grow tall but are short and spread out? 

c) Why viruses are obligate parasite?

(ii) With examples to each mention any three movable joints found in mammalian skeleton

8. (a) Mr. Moshi reminded all science students to always follow laboratory safety rules.

By giving three (3) reasons, explain why it is necessary to adhere to this remainder?

(b) If you go to any science (Biology) Laboratory, you will come across containers carrying different chemicals. Draw and name chemical warning sign that can be found in the containers of the following chemicals: (i) Pesticides and poison

(ii) Concentrated sodium hydroxide

(iii) Spirit

9 (a) Explain how a plant cell prevent bursting when placed in hypotonic solution

(b) What will be the effect in recipient's blood when he/she has been transfused an incompatible blood from the donor.

(c) State any three precautions to be taken during blood transfusion

10. (a) (i) What are the raw materials for photosynthesis

(ii) List one product of photosynthesis

(b)State how the ileum is adapted for absorption function.

SECTION C.

11. Food preservation is very important in Human life. Discuss its importance under the following guideline

(a) Need for preservation

(b) Local (traditional) food preservation methods and their biological effects

(c) Advantages of local food preserving methods.

PRESENT’S OFFICE, REGIONAL ADMINISTRATION

AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES

COMPETENCY BASED EXAMS

BIOLOGY FORM THREE

MID-TERM EXAMS – AUGUST/SEPT – 2024

TIME: 2:30 HRS

INSTRUCTIONS

1. This paper consists of section A, B and C with a total of eleven (11) questions

2. Answer all questions in section A and B and two (2) questions from section C.

3. Section A carries sixteen (16) marks, section B carries fifty four (54) marks and section C carries thirty (30) marks.

4. All writings must be in blue or black ink except drawings which should be in pencil.

5. All communication devices, programmable calculators and any unauthorized materials are not allowed in examination room.

6. Write your examination number on every page of your answer sheet(s).

SECTION A (15 MARKS)

i. The immediate result of fertilization in a flowering plant is the formation of

1.   zygote
2.   seed
3.   endosperm
4.  Embryo

ii. Which of the following is not an excretory product in plants; 

1.  Tannis
2.  Carbondioxide
3.  Urea
4.  Calcium oxalate
5.   Latex

iii. Joints are held together by;

1.  Ligaments
2.  Cartilage
3.  Tendon
4.  Muscles
5.   Bones

iv. A rise in the body temperature of human body is corrected by

1.  Constriction of the skin arteries and sweating
2.  Constriction of the skin arteries and shivering
3.  Dilation of the skin arteries and sweating
4.  Dilation of the skin arteries and shivering

v. Which of the following statement gives the common cause of cretinism (feeble mindedness) 

1.  Lack of balanced diet
2.  Lack of coordination between the nerves and endocrine system
3.  Poor functioning of the adrenal gland in childhood
4.  Poor functioning of the thyroid gland in childhood

vi. Which of the following is not an advantage of angiosperms?

A. They are source of food

B. Some have medicinal values

C. Acts as wind breakers

D. Sources of timber.

vii. Guttation is the:

1.  Loss of water vapor from leaves
2.  Excretion of excess water droplets from leaves
3.  Absorption of water by roots
4.  Movement of water through xylem

viii. The first site of digestion of protein is in the,

1.  Mouth
2.  Oesophagus
3.  Stomach
4.  Small intestine

ix. Which of the following is NOT a characteristic of Euglena?

1.  It has chloroplasts for photosynthesis.
2.  It has a cell wall.
3.  It has an eyespot for detecting light.
4.  It can move using a flagellum.

x. Which of the following is not a feature of paramecium?

1.  They are autotrophic
2.  They use contractile vacuole to regulate water in their body
3.  Can produce both sexually and asexually
4.  Their body is covered with pellicle

2. Match the words on the left hand COLUMN A with the correct statement on the right hand COLUMN B.

SECTION B

3. Differentiate the following pairs of Biological terminologies

1.   Spermatogenesis and Oogenesis
2.  Still birth and breech birth
3.   Ectopic pregnancy and abortion
4.  Fertilization and implantation
5.   Fraternal twins and identical twins

4. Describe the pathway of water movement from the soil to the leaves.

5 . (a) Give the name of:

     (b) The bacteria that cons nitrates into nitrites a ammonia.

     (c) A nitrifying bacterium that converts ammonia in nitrites.

     (d) A nitrifying bacterium converts nitrates into nitrites.

(b) State two ways through nitrogen is made available plant.

6. (a) distinguish between endoskeleton and exoskeleton?

b) What are advantages of having exoskeleton to an organism?

c) State two features of joints that makes them reduce friction.

7.  a) Write the overall equation for the process of photosynthesis

b) Differentiate between the light stage and dark stage of photosynthesis

c) Differentiate between macro-nutrient and micro-nutrients

8. Animal A with 36^oC body temperature and animal B with 30^oC body temperature were put into a refrigerator switched to 10^oC at about 15 minutes. When temperature (s) of animal A and B were taken again (after 15 minutes) the temperature of animal A was averagely the same but the temperature of animal B was 10^oC.

1.   Give the biological terms used to describe animal A and B with respect to temperatures control
2.  Briefly explain how mammals overcome overheating.

9. a) Briefly explain how fertilization takes place in conifers

   b) Outline the advantages and disadvantages of confers

10.a)  Give the distinctive features of protoctists

     b) Explain the economic importance of protoctist.

SECTION C

11. Explain the process of cell differentiation and its importance in multicellular organisms.

PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES,

TERMINAL EXAMINATIONS

 BIOLOGY FORM THREE

Time: 3Hours

Instructions 

1.         This paper consists of sections A, B, and C with a total eleven (11) questions.
2.         Answer all question in the sections A, B and two (2) questions from section C.
3.         Section A carries sixteen (16) marks, section B fifty four (54) marks and section C carries thirty (30) marks.
4.         All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
5.         Communication devices and any unauthorized materials are not allowed in the examination room.
6.         Write your Examination Number on every page of your answer booklet (s)

SECTION A.

1.         For each of the following items  (i-x).Choose the correct answer from given alternatives and writer its letter besides the item number in the answer booklet

1. A patient arrives at the emergency room with severe blood loss. Which of the following actions is MOST important based on an understanding of blood circulation?

1. Measure the patient's blood pressure.
2. Admit the patient to a regular hospital room.
3. Give the patient pain medication.
4. Schedule the patient for an MRI scan.

2. Unlike animals, plants transport materials throughout their bodies without a circulatory system. Which of the following processes is MOST important for transport in plants?

1. Diffusion
2. Active transport.
3. Ingestion
4. Muscular contraction

3. Even though plants lack a nervous system, they can still respond to stimuli in their environment. Which of the following is an example of a plant's response to a stimulus?

1. A flowering  blooming at dawn.
2. A plant secreting a sticky substance to trap insects.
3. A plant growing taller towards sunlight.
4. A vine plant twining around a support structure.

4. Animals rely on both the nervous system and hormones for coordination. Which of the following statements accurately compares their roles?

1. The nervous system provides slow, long-term responses, while hormones provide fast, short-term responses.
2. The nervous system coordinates conscious actions, while hormones regulate unconscious actions.
3. The nervous system transmits signals through the bloodstream, while hormones act directly on target organs.
4. The nervous system only functions in complex animals, while hormones are present in all animals.

5. The kidneys are vital organs in the excretory system. Why is understanding excretion important for maintaining overall health?

1. Excretion removes excess water from the body.
2. Excretion helps regulate body temperature.
3. Excretion eliminates waste products that can be harmful if allowed to accumulate.
4. Excretion aids in the digestion of food.

6. Maintaining a stable internal environment is crucial for an animal's survival. What is the term for this concept?

1. Homeostasis 
2. Adaptation
3. Respiration
4. Metabolism

7. A scientist is examining a cell under a microscope and observes various structures within it. How can identifying these structures help them understand the cell's function?

1. Different organelles have specific shapes unrelated to their function.
2. The number of organelles within a cell is unrelated to its function.
3. The structure of each organelle provides clues about its role within the cell.
4. All organelles look similar under a microscope.

8. During a field trip, students encounter an unfamiliar organism. Classifying this organism within Kingdom Plantae would be beneficial because it would likely tell them:

1. The organism's reproductive method.
2. The organism's specific diet.
3. The organism's exact geographical location.
4. The organism's potential danger to humans.

9. The circulatory system and the excretory system work together to maintain a healthy balance in the body. How do these systems interact?

1. The circulatory system transports blood waste to the excretory system for removal.
2. The excretory system provides water for the circulatory system to function.
3. The circulatory system regulates the excretory system's activity.
4. The excretory system filters blood components within the circulatory system.

10. Plant cells have unique structures like a cell wall and a central vacuole. How do these structures facilitate the transport of water and nutrients throughout the plant?

1. The cell wall provides a rigid barrier that hinders transport.
2. The central vacuole stores water, making it unavailable for transport.
3. The cell wall allows for selective movement of water and nutrients, while the central vacuole stores excess water.
4. The cell wall and central vacuole limit the movement of water and nutrients within the plant.

2. Match the items in LIST A with the responses in LIST B by writing the letter of the corresponding responses beside the item number.

SECTION B: 70 MARKS

Answer All Question

3. Kipendawatoto and his family during the holiday he visited Mikumi national park and on moving around the park, the following organisms were observed; Zebra, giraffe, lion, grasses, mushroom, hyena and antelope.

(a) Construct two (2) food chain from the organisms observed in the national park

(b) Construct a simple food web.

(c) Identify organism(s) which are

1. Producer (s)
2. Secondary consumer(s)
3. Decomposer

4. (a) Explain why

(i) The rate of breathing increase quickly during exercise?

(ii) Is better to breathe through nose than through the mouse

(b) How are respiratory surfaces adapted to their role? (Give 5 points)

5. (a)A trauma patient has lost a significant amount of blood. How would understanding blood circulation help in treating this patient?

(b) Briefly explain how you can help a victim of snake

6.(a)Plants lack a circulatory system. Explain how plants transport water and nutrients obtained from the soil to all their parts.

(b). A flower was found to have conspicuous petals, scented and firmly held stigma and anthers.

(i). What is likely agent of pollination of the flower?

(ii). What is the significance of firmly held stigma in the flower?

7. (a)Although plants lack a nervous system, they can still respond to stimuli. Give an example of a plant's response to a stimulus and explain the mechanism behind it.

(b) State the adaptations of the leaf to photosynthesis

8. A bread was put in a wet cupboard. After few days black thread like structures which ended up in a club like structures appeared in the bread.

a)   Write the common name of the organism that grew on the bread surface

b)   Name the Kingdom and phylum in which the observed organism belongs

c)   Outline four (4) advantages of the members of the Kingdom you mentioned in (b) above

9. (a)Compare and contrast the role of the nervous system and hormones in coordinating animal responses.

(b) Explain three processes that are involve in urine formation

10. The circulatory system and the excretory system work together to maintain a healthy balance in the body. Explain how these two systems interact to achieve this balance.

11. Explain how the structure of plant cells, specifically the presence of a cell wall and central vacuole, facilitates the transport of water and nutrients throughout the plant.

PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES,

MID TERM ONE – MARCH-2024

BIOLOGY FORM THREE

Time: 3Hours

Instructions 

1.         This paper consists of sections A, B, and C with a total eleven (11) questions.
2.         Answer all question in the sections A, B and two (2) questions from section C.
3.         Section A carries sixteen (16) marks, section B fifty four (54) marks and section C carries thirty (30) marks.
4.         All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
5.         Communication devices and any unauthorized materials are not allowed in the examination room.
6.         Write your Examination Number on every page of your answer booklet (s)

SECTION A

1.         For each of the following items  (i-x).Choose the correct answer from alternatives given

1.  John has cardiovascular disease. Which of the following does not contribute to it

1. Dietary fibre
2. Smoking
3. Fatty foods
4. Lack of exercise
5. Over-weight

2.      Which of these diseases is not caused by fungi

1. Wheat rust
2. Candidiasis
3. Influenza
4. Powdery mildew
5. Maize rust

3.   Bread mould is an example of

1. Byrophyta
2. Pteridophyta
3. Zygomycota
4. Basidiomycota
5. Coniferophyta

4.    Byrophytes are said to be most primitive plants on earth because

1. They grow on wet areas
2. They do not produce seeds
3. They produced assexually and sexually
4. They lack vascular tissues
5. They lack chlorophyll

5.      Which part protects lungs from injury and shock?

1. Trachea
2. Ribs
3. Bronchus
4. Epiglottis
5. Diaphragm

6.    A patient was confirmed to be suffering from meningitis after attending Mawenzi Hospital. How cam disease be prevented from spreading?

1. Eliminating fleas
2. Abstaining from sex
3. Isolating the patient
4. Killing water snail
5. Cutting long grasses

7.  Monica eats a meal consisting of maize (ugali) and beef (meat). Where did digestion of meat start in alimentary canal?

1. Mouth
2. Oesophagus
3. Stomach
4. Ileum
5. Duodenum

8.     Juma had problem with liver and bile could not be produced. Which of the following food digestion will be impaired?

1. Ugali
2. Cassava
3. Beans
4. Fruits
5. Fatty foods

9.    The enzyme that convert starch to maltose is

1. Lipase
2. Sucrose
3. Peptidase
4. Amylase
5. Trypsin

10.      Which of thr following is not transported by plasma?

1. Nutrients
2. Hormones
3. Waste products
4. Feaces
5. Respiratory gases

2.         Match the parts of digestive system on given in list A and list B by writing correct answer on space provided.

SECTION B

(54 MARKS)

Answer all questions in this section

3.         James is having painful burning sensation around the middle of his chest whenever he eats spicy food. He’s also having a problem of passing out very hard stool

1.    Identify possible digestive disorder he’s facing
2.    What would you advice him in order to alleviate the problem
3.    Identify causes of such problems

4.         Mention the components of gastric juice and explain their function
5.         The leaf is main organ for photosynthesis.

1.          explain how it is adapted to its function
2.          What is the significant of photosynthesis to living organism?

6.         Briefly explain the following terms;

1.     Carbon dioxide fixation
2.  Photosynthesis
3.      Palisade mesophyil
4.       Photolysis

(b)Differentiate light stage and dark stage of photosynthesis

7.         Form two students from Jangwani Secondary School carried out a survey to determine numbers of organism in their school garden. They recorded their findings as shown below

1.             Which of the above organism are

1.     Producers
2.  Primary consumers

2.             Draw a possible food chain to show the energy flow in the garden
3.             (i) Is food chain above stable?

(ii) Give reason for your answer in 7 (c) (i) above 

(iii) What can be done to sustain the food chain in school garden?

8.         (a) Give a reason for the following

1.     Animal cell burst when placed in pure water where as plant cell does not
2.  An animal cell shrinks when placed in concentrated solution.

             (b) Explain three factors that affect the rate of diffusion.

SECTION C

30Marks

9.         Briefly explain the following

1.             Arteries have thick-walled muscular and elastic walls
2.             Arteries do not need valves
3.             Small organism like amoeba and Paramecium do not need circulatory system

10.    Describe the function of human skeleton
11.    Poor waste products disposal creates problems in the environment. In six points justify the statement.

PRESENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES

COMPETENCY BASED EXAMS

BIOLOGY FORM THREE

ANNUAL EXAMINATIONS- 2023

TIME: 2:30 HRS

INSTRUCTIONS

1. This paper consists of section A, B and C with a total of eleven (11) questions
2. Answer all questions in section A and B and two (2) questions from section C.
3. Section A carries sixteen (16) marks, section B carries fifty four (54) marks and section C carries thirty (30) marks.
4. All writings must be in blue or black ink except drawings which should be in pencil.
5. All communication devices, programmable calculators and any unauthorized materials are not allowed in examination room.
6. Write your examination number on every page of your answer sheet(s).

SECTION A (16 MARKS)

1. For each of the following items (i) – (x) Choose the most correct answer correct answer from among given alternatives given.

1. After visiting Tarangire National parks, Peter saw organism which had similar feeding habit. What term can be used to describe this organism?

1. Community
2. Trophic level
3. Food chain
4. Food web
5. Habitat

2. Monica found an Organism shaped like an umbrella in a damping site. Which statement is true about the organisms?

1. It is a mushroom and belongs to phylum Ascomycota
2. It is yeast and belongs to phylum Basidiomycota
3. It is mushroom and belongs to phylum Basidiomycota
4. It is Mucor and belongs to phylum Ascomycota
5. It is Yeast and belongs to phylum Ascomycota.

3. David, A bus driver was preparing items for his first Aid Kit Which one did she not include?

1. A pair of scissors
2. Touch
3. Sterilized cotton wool
4. Amoxylin Tablets

4. Juma ate a meal consisting of protein. Where did the digestion of the meal begum?

1. Mouth
2. Duodenum
3. Stomach
4. Small intestine
5. Ileum

5. During an investigation a form II student put a piece of bread in a wet cupboard, after a few days the bread was covered with grayish substance. What are the name of the substance?

1. Penicillium
2. Rhizopus stononifer
3. Entamoeba histolytic
4. Agaricus compestris
5. Saccharomyces cerevisiae

6. In a motor car accident the bus driver found that he could hardly maintain equilibrium, which of the structure was damaged?

1. Semi-circular canal
2. Fore brain
3. Medulla Oblangata
4. Eustachian Tube
5. The cochlea

7. Dr. Nambena received medical results from laboratory and identified that the victim suffered from filicidal woman infection. Which of the following disease is typical caused by above worms?

1. Lymphloma
2. Elephantiasin
3. Oedema
4. Thrombosis
5. Arteriosclerosis

8. The glomenulars filtrate contains the following materials

1. Glucose molecules, water, urea and dissolved mineral salt

2. Cells, protein and glucose
3. Uric acid, proteins and urea
4. Vitamin, urea and water
5. Mineral salts, proteins and glucose

9. The part of ear which convert sound signals into nerve impulse which are transmitted to brain include

1. Ear Ossicles
2. Semicircular canal
3. Cochlea
4. Eustachian Tube
5. Ear dram

10. The part of compound Microscope which help to concentrate light into beams to

1. Ocular tube
2. Condenser
3. Mirror
4. Revolving nosepiece
5. Diaphragm

2. Match items from LIST A with correct phrase in LIST B by writing the letter of correct response from LIST B against item number in LIST A.

SECTION B (54 MARKS)

Answer all questions in this section

3. (a)Give three factors that Aid in Ultra filtration in the glomenulars

(b)Give explanation of the following

1. Plasma proteins are absent in glomerular filtrate
2. Urine of a normal person does not have glucose
3. During cold days one produces large quantities of dilute Urine

(c) State 3 adaptation of convoluted tubule to re-absorption

4. (a)Sate any three adaptations of the leaf to photosynthesis

(b)How do the following factors affect rate of photosynthesis

1. Chlorophyll
2. Sunlight
3. Carbon dioxide

5. (a) During cooking a cook unfortunately touched a hot charcoal burner. He pulled in hand abruptly.

1. What is the name of that response
2. What is the name given to pathway which describe response in 8a(i) above

(b) Illustrate the pathway of an impulse from the sense organs to effectors of the cooks’ hand

6. Juma visited Mikumi National park and saw the following organisms, Zebra, giraffe, lion grasses, Mushroom, hyena and antelope.

1. Construct two (2) food chains from organism observed in the National park
2. Construct a simple food web
3. Identify organism which are

1. Producer
2. Secondary consumer
3. Decomposer

7. (a)Draw a diagram of maize cell and label the parts responsible for the following functions.

1. Control all activities of cell
2. Provide shape of the cell
3. Chemical reaction occur here

(b)How is maize cell different from cell of a goat?

8. (a)A flower was found to have conspicuous petals scented and firmly held stigma and anthers

1. What is likely agent of pollination of the flower?
2. What is the significance of firm held stigma in the flower?

(b)Briefly explain the rule the following structures in flowers

1. Petal
2. Stigma
3. Ovary
4. Style
5. Anther

SECTION C (30 MARKS)

Answer two (2) questions in this section

9. (a)Explain why

1. The rate of breathing increase quickly during exercise
2. Is better to breathe through nose than through mouth

(b)How are respiratory surface adapted to their role?

10. Many people believe that fungi are harmful organism. As biologist, explain six ways in which fungi are beneficial to humans

11. Humans in their daily life come into contamination with viruses, bacteria, worms, and other pathogens explain any six ways used by humans to prevent invasion and infections by disease causing micro-organisms.

PRESIDENT OFFICE REGIONAL ADMNISTRATION

AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES 

COMPETENCE BASED ASSEMENT

BIOLOGY FORM THREE 

TERMINAL EXAMS MAY – 2023 

033/1

Time: 3Hours

Instruction

1. This paper consists of sections A, B and C with a total of thirteen (13) questions.
2. Answer all questions in sections A and B and one (1) question from section C
3. Except for diagrams that must be drawn in pencil, all writing should be in blue or black ink.
4. Calculators, cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your Examination Number on every page of your answer booklet(s)

SECTION A

1. Choose the correct answer from the alternatives given below;

1. Our muscles are attached to the bones at the joint by a strong tissue referred to as:

1. Ligament
2. Tendon
3. Cartilage
4. Connective tissue
5. Skeleton.

2. If a plant cell is placed in hypotonic solution, it experiences a biological condition called:

1. Haemolysis
2. Turgidity
3. Crenation
4. Plasmolysis
5. Turgor pressure.

3. Yeast is economically important because it is used in the baking process. This member of fungi is found in phylum:

1. Ascomycota
2. Zygomycota 
3. Basidiomycota
4. Eumycota  
5. Bryophyta.

4. In an experiment using a compound microscope, objects under observation were not seen properly due to poor light reflection. Which part of microscope will be affected?

1. Diaphragm
2. Mirror
3. Objective lens
4. Clips
5. Course adjustment knob.

5. When a fish is taken out of water can die because;

1. It has no legs
2. Its mouth is small to get the food on land
3. Its gills are not able to exchange dry respiratory gases
4. On land there are many enemies than in water
5. The water on land flows faster than in rivers

6. When a bird builds a nest on a tree, the bird benefits but the tree neither benefits nor loses. What type of relationship is shown by bird and the tree? 

1. Amensalism
2. Parasitism
3. Mutualism
4. neutralism
5. Commensalism

7. A patient who has the following symptoms mild fever , slight abdominal pain , diarrhoea and vomiting is likely to be suffering from; 

1. Malaria
2. Cholera
3. Measles
4. Tuberculosis
5. Typhoid

8. Disease which is common infection of the respiratory system is: -

1. Tuberculosis
2. Aids
3. Malaria
4. Cholera
5. Typhoid

9. One of the following is the principle of good manner 

1. Eating fast
2. Speaking respectively
3. Throwing food
4. Wearing tight clothes
5. Washing the body everyday

10. Which food substance can be tested by using Iodinesolution? 

1. Protein
2.  Starch 
3. Carbohydrate 
4. Non reducing sugar
5. Reducing sugar

2. Match the description of the parts of skeleton in List A with corresponding Phrase/Terminology in List B by writing the letter of correct response beside item number in answer booklet.

       SECTION B. (70 MARKS)

Answer all questions in this section

3.(a) (i) What are the raw materials for photosynthesis

(ii) List one product of photosynthesis

(b)State how the ileum is adapted for absorption function.

4. (a) Explain the term Osmoregulation

(b) Briefly explain the mechanisms of regulating sugar level in the blood.

5. (a)In a human urine Sample, Some Sugar was detected during a laboratory test

1. What is the likely name of the detected sugar?
2. Name the hormone that was likely to be deficient in the body of the person whose urine was tested and the gland that produce it.
3. Name the disease, that the person was likely to be suffering from
4. What food would you recommend such a person to avoid.

(b)Explain why there is a great concentration of Urea in urine than in glomerular filtrate.

6. a) The acronyms AIDS, ARVs and HIV they are being used in hospitals and schools while most of people in the community they do not know the clear meaning of these acronyms. Assume you are the biology expert in your community make a clean meaning of these acronyms so that everybody can understand.

b) Our bodies are being protected against diseases and infections by different types of white blood cells. Explain the functions of the following types of white blood cells found in our bodies.

i. Neutrophils and monocytes

ii. Eosinophil’s and basophils

iii. B lymphocytes and T lymphocytes

7. a) Explain the following phenomena as used in biology.

i. Insulin and glucagon hormones work antagonistically

ii. In cold and humidity weather, human usually produce large quantity of urine that is colorless.

b) Nowadays people in world are suffering many diseases caused by poor waste disposal. By using knowledge that you have, explain three basic principle that will you use to minimize this problem in the world.

8. (a) With examples state the meaning of "Abiotic" and 'biotic" factors of the environment.

(b) (i)Differentiate the terms "food chain"from a Trophic level"

(ii) Construct the food web by using the following organism. Grass, gazelle, wildebeest, lion, decomposer, hyena, zebra and shrunk.

10. In an investigation, students set up the apparatus below in the laboratory and made observations after 72 hours.

 Explain how inclusion of the following components would affect the mouse in the experiment:

1. light (2 marks)
2. Sodium hydroxide

10.

 A person accidentally touches a hot pan and responds as illustrated in the diagram below.

1. Explain how the response illustrated above occurs.
2. Explain how auxins are utilised as selective weed killers in agriculture. (2 marks)

11. (a) Define the term analogous structures.

(b) Give two illustrations of analogous structures in mammals.

(c) Give two illustrations of analogous structures in mammals.

SECTION B. 15 MARKS

ANSWER QUESTION 12

12. Describe what happens to a meal rich in proteins along the alimentary canal from ingestion to egestion.

PRESIDENT OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES 

COMPETENCE BASED ASSESSMENT

033/1 BIOLOGY FORM THREE 

NEW EXAM FORMAT-2023

MID-TERM EXAMS MARCH – 2023 

Time: 3:00 Hours

Instruction

1. This paper consists of sections A, B and C with a total of eleven (11) questions.
2. Answer all questions in sections A and B and one (1) question from section C
3. Except for diagrams that must be drawn in pencil, all writing should be in blue or black ink.
4. Calculators, cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your Examination Number on every page of your answer booklet(s)

SECTION A 16 Marks

Answer All Questions

1. For each of items (i) – (x), Choose the correct answer from among the given alternative beside item number in answer booklet provided

1. The body of a Fungus is Organized into thread like structures called

1. Chitin
2. Hyphae
3. Mycellum
4. Thallus
5. sori

2. the leaves of a fem plant are called

1. Pinnae
2. Rachis
3. Fronds
4. Prothallus
5. Hyphae

3. The three parts responsible for the basic structure and Function of any cell are

1. Nucleus, cell membrane, cytoplasm
2. Nucleus, nucleolus and cytoplasm
3. Nucleus, cell membrane, and cell wall
4. Cell membrane, cell wall and cytoplasm
5. Cell vacuole, chloroplast, mitochondrion

4. The neuron found in human being is an example of

1. Tissue
2. Cell
3. Organ
4. Organelle
5. system

5. a structure that allows air to enter the trachea and prevent food from entering the wind pipe is known as

1. glottis
2. Tongue
3. Soft plate
4. Mouth
5. Epiglottis

6. Which food substance can be tested by using iodine solution?

1. Protein
2. Starch
3. Carbohydrate
4. Non-reducing sugar
5. Reducing sugar

7. The reason why rabbits are Primary consumers is because

1. Feed on animals
2. Feed on plants
3. Feed on bacteria
4. Feed on Fungi
5. Make their own food

8. Identify the wrong statement about monocots

1. Have taproots
2. Have parallel venation
3. Floral parts are in three or multiples of three
4. Lack pith
5. Have monocot roots

9. Joints are held together by

1. Ligaments
2. Cartilage
3. Tendon
4. Muscles
5. Bones

10. Plants are said to be vascular if

1. They contain Phloem
2. They Contain Xylem
3. Contain Xylem and Phloem
4. Contain Xylem only
5. They contain Xylem and Cambium only

2. Match the description of the parts of skeleton in List A with corresponding Phrase/Terminology in List B by writing the letter of correct response beside item number in answer booklet.

SECTION B (54 marks)

Answer all questions in this section

3. (a) It is necessary for Organisms to move from one point to another. Justify this statement by giving four points.

(b) Proper food preservation can prevent hunger. Justify this statement by explain four modern method of food preservation

4. (a) James has Just reached Fourteen Years. Identify five changes that might be observed on the body of James

(b) Explain the needs of adolescents

5. (a)What is a skeleton?

(b)Describe the function of human skeleton

(c) Artificial classification is no longer popular; Justify this statement by giving five points

6. (a) During a group discussion; Halima Suggested that Bryophytes and coniferophytes are similar in every aspect. Do you agree with her? Given reasons for your answer.

(b) How does Osmosis help plants to maintain their shape?

(c) Plasmodium in a protoctista. Describe the main features of kingdom protoctista.

7. (a)What would have to organism if mitochondrion are removed from body?

(b)Differentiate Photosynthesis and respiration

8. (a)What do you understand by the terms

1. Plasmalemma
2. Protoplasm
3. Protoplast

(b)Which organelles are you likely to find on

1. Aging cells
2. Actively dividing cells
3. Enzyme secreting cells

SECTION C (30 Marks)

Answer any two questions from this section.

9. Describe the significance of Transport of materials in Living Organism.

10. What is the economic importance of Anaerobic respiration?

11. Describe the economic importance of angiosperms

THE PRESIDENT’S OFFICE MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPETENCY BASED SECONDARY EXAMINATION SERIES

BIOLOGYFORM THREE

TIME: 3 HOURSNOVEMBER 2022

INSTRUCTIONS:

1. This paper consists of sections A, B and C.
2. Answer All questions in section A, B and two (2) question from section C, question (13) is compulsory.
3. Write your Examination Number on every page of your answer booklet(s).

SECTION A (15 MARKS)

1. Choose the correct answer

1. Disease which spread quickly and affect the large number of people for a short time is:

1. Pandemic disease
2. Endemic disease
3. Epidermic disease
4. AIDS
5. Typhoid

2. On the microscope the STAGE is a part which:

1. Direct the light to the object under observation
2. Hold the object to be observed
3. Move fine adjustment knob so as to obtain a clear mage of the object
4. Magnify the object under observation
5. Support the objective lens

3. Which of the following are hormone concerned with regulation of sugar in the blood

1. Adrenaline hormone, thyroxine hormone
2. Auxins hormone and insulin hormone
3. Prolaction, oxytocin
4. Insulin, glucagon
5. Oestrogen, progesterone

4. Oxygenated blood is found in arteries except:

1. Aorta
2. Subclaria artery
3. Pulmonary artery
4. Pulmonary vein
5. Vein

5. When a bird builds a nest on a tree, the bird benefits but the tree neither benefits nor loses. What type of relationship is shown by bird and the tree?

1. Amensalism
2. Parasitism
3. Mutualism
4. neutralism
5. Commensalism

6. The word cell is derived from the Latic word “cellula” which means a:

1. Unit of life
2. Little room
3. Cork from the bark of the tree
4. Living thing
5. Robert Hook

7. Organisms can either be:

1. Unicellular or Prokaryote
2. Living thing or Eukaryote
3. Living thing or Non-living thing
4. Multicellular or Unicellular
5. Multicellulalr or Unicellular

8. Pick up the wrong statement

1. All organisms respire
2. Some fungi are edible
3. Protoctista have photosynthetic and heterotrophic mode of nutrition
4. Cell wall is absent in Animalia
5. Nuclear membrane is absent in Animalia

9. One of the major component of the cell was of most fungi is:

1. Chitin
2. Cellulose
3. Starch
4. Lipids
5. Phospholipid bilayer

10. Group of sporangia borne on the underside of fern leaves are called:

1. Tholus
2. Protholus
3. Fronds
4. Fiddle head
5. Sori

2.

SECTION B:

2. (a)Define the following terms as used in Biology

(i)An accident

(ii)Burning

(iii)Safety

(iv)First aid kit

(b)Explain shortly why is important to dispose waste properly

3. It has been observed that some people dispose waste around the lake which supply water to the surrounding community. Briefly explain three problems which are likely to happen to the area.

4. Study carefully the following food chain then answer the questions that follow:

Maize seedsHensHumansBacteria

(a)Which of the above organisms are:

(i)Herbivores(ii)Consumers

(b)(i)Name other organisms that can replace the bacteria from the food chain in5 above

(ii)Outline two advantages of food chain

5. Alex complain of having burning sensation around the chest region

(a)What digestive order is the facing?

(b)Give three measures he should take to treat the disorder

6. (a)What is the difference between first aid and first aid kit?

(b)Outline five (5) importance of first aid to a victim

7. (a)Differentiate between responsible behaviour and risky behavior

(b)State two behaviors which may lead to the following risks

(i)STD’s

(ii)HIV infections

(iii)Drug abuse

(iv)Unplanned pregnancies

(c) Suggest two (2) ways on how to care and support a victim of HIV/AIDS.

8. Explain how a plant cell prevent bursting when placed in hypotonic solution

(b) What will be the effect in recipient's blood when he/she has been transfused an incompatible blood from the donor.

(c) State any three precautions to be taken during blood transfusion

9. Consider that you are medical doctor and you have received a patient whose investigation a diagnosed kidney stone. Suggest to the patient three possible causes and three control measures for kidney stones.

10. Reptiles are organisms whose body temperature is affected by environmental temperature. Briefly explain two ways that help reptiles to survive in different weather condition.
11. Briefly explain four reasons why plants lack specialized excretory organs

12. Explain the biological significance of the following ;

(i) Stomata are placed in the lower part of the leaf

(ii) Plants shed off leaves during dry seasons

(iii) It is advised to irrigate your plants in early morning or late evening.

(iv) Alveoli is supplied with a network of blood capillaries

SECTION C

Answer two questions from this section, question number 13 is compulsory

13. Briefly explain the HIV/AIDS basing on the following guidelines

• Meaning
• Mode of transmission
• Symptoms
• Preventive measures
• Effects
• Treatment/cure

14. Which classification system do taxonomists mostly prefer? Explain any four reasons as to why they prefer that system.

15. Discuss the economic importance of bacteria. Give examples where necessary

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPETENCE BASED SECONDARY EXAMINATION SERIES

BIOLOGY 1 TERMINAL EXAMINATION

FORM THREE-2022

Time: 3Hours

INSTRUCTIONS.

1. This paper consists of sections A, B and C with a total of fifteen (15) questions.
2. Answer all the questions in sections A and B and two (2) questions from section C of which question number 13 is compulsory.
3. Section A carries fifteen (15) marks, section B sixty (60) marks and section C carries twenty five (25) marks.
4. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
5. Cellular phones and any unauthorised materials are not allowed in the examination room.
6. Write your Examination Number on every page of your answer booklet(s).

 SECTION A (15 Marks)

 Answer All questions in this section.

1. For each of the items (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer booklet provided.

1.              A structure which allows air to enter the trachea and prevent food from entering the wind pipe known as;

1.             Glotics
2.             Tongue
3.             Soft palate
4.             Mouth
5.              Epiglotics

2.           Study the following sequence of organism ;

Grass                         Rabbit                   wolves’                       fleas

The sequence is example of;

1.             Food web
2.             A pyramid
3.             Food chain
4.             Abiotic

3.         Lipase enzymes are mainly contained in;

1.             Hydrochloric acid
2.             Gastric juice
3.             Saliva
4.             Intestinal juice
5.              Pancreatic juice

4.         A person who is admitted in hospital after an operation, is most likely be advised to feed on food rich in ;

1.             Vitamin C
2.             Vitamin A
3.             Protein
4.             Lipids
5.              Water

5.            Which of the following is a vector for sleeping sickness?

1.             House fly
2.             Mosquito
3.             Tsetse fly
4.             Tick
5.              Cockroach

6.         The outermost living structure to identify a plant cell is;

1.             Cytoplasm
2.             Vacuole
3.             Cell wall
4.             Nuclear membrane
5.              Cell membrane

7.       One distinctive features of fungi is;

1.             Gill structure
2.             Hyphae
3.             Cellulose
4.             Cap
5.              Exoskeleton

8.    The main product of photosynthesis process is;

1.             Sun light energy
2.             Carbohydrate
3.             Carbon dioxide
4.             Water
5.              Oxygen

9.         True ribs are the first;

1.             7 pairs
2.             5 pairs
3.             8 pairs
4.             6 pairs
5.              11 pairs

10.            Absence of flowers  and fruits is a characteristics of;

1.             Monocots
2.             Dicots
3.             Conifers
4.             Vascular plant
5.              Cambium

2: Match the responses in LIST B with the phrase in LIST A by writing the letter of the correct response from LIST B besides the item number of LIST A in your answer sheet.

SECTION B (60 MARKS)

Answer ALL questions in this section

 3.  (a)  Define what is accommodation?

             (b) Describe the image formation

 4   (a) Distinguish digestion from egestion as used in human biology

             (b) Explain why during digestion, the food is:

                 (i) Alkaline when in duodenum

                 (ii) Acidic when in the stomach

                  (iii) Alkaline when in the ileum

 5  (a) List any four characteristics of members of kingdom Plantae.

              (b)  (i) State the division in the kingdom in (a) above

                  (ii) Name one representative member for each division in (b) above. 

6   State any three principles of waste disposal and give three importance of proper               waste disposal.

7   Describe the long-sightedness disorder and how is corrected  

8.  Explain how the parts of the mammalian heart are adapted to their function.

 9.  (a) Explain the general effect of drug abuse and drug addiction

            (b) List five ways of preventing drug abuse and addiction

10:  Describe the symptoms of a person who is infected by Vibrio cholera and suggest               six preventive measures and treatment for cholera outbreak.

 11:  (a) state any four functions of a human skeleton

              (b)  Describe the components of mammalian appendicular skeleton.

12.Describe the neuronic pathway taken by reflex actions in human being.

SECTION C (25 Marks)

Answer two (2) questions from this section. Question number 13 is a compulsory.

13. Explain two factors affecting gaseous exchange in animals.

14. Elaborate the causes of drug abuse to young people and advise the Tanzanian Government on the ways of combating drug abuse in the country.

15. (a) State the function of the following parts of the brain:

1. Medulla oblongata
2. Hypothalamus
3. Cerebellum
4. Cerebrum

(b) (i) Define the term “drug use”

2. Explain three effects of drug abuse
3. Explain two ways in which drug abuse can be controlled

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPETENCE BASED SECONDARY EXAMINATION SERIES

BIOLOGY 1  MID TERM  EXAMINATION

FORM THREE-2022

Time: 3Hours

Instructions.

1.    This paper consists of section A, B and C with a total of 15 questions.
2.    Answer all questions in section A and B and TWO  (2) question from section C in which question 13 compulsory.
3.    All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4.    Cellular phones and any unauthorized materials are not allowed in the examination room.
5.    Write your number on every page of your answer booklet.

 SECTION A (20 Marks)

 Answer All questions in this section.

(i)The following are examples of water – borne diseases:

1.      Malaria and bilharzia.
2.      Yellow fever and typhoid
3.       Diarrhoea and malaria.
4.      Cholera and plague.
5.       Cholera and typhoid

(ii) One of the distinctive features o f kingdom fungi is possession of:

1.      Plasma membrane
2.      Cytoplasma
3.       Chitin materials
4.      Cell membrane
5.       Cellulose materials.

(iii) A grasshopper ventilates its gaseous exchange surfaces by:

1.      Moving the diaphragm
2.      Beating of cilia
3.       Rhythmic body movement
4.      Opening of spiracles
5.       Moving its rib cage.

(iv) The taxonomic category of organisms belonging to the same class but not to the same family is?

1.      Species
2.   Genus
3.    Order
4.   Phylum
5.   Kingdom.

(v) The function of sunlight energy in the human skin is to stimulate the synthesis of?

1.   Vitamin A
2.   Vitamin C
3.    Vitamin D
4.   Vitamin K
5.   Vitamin B.

(vi) Night blindness in human body is avoided by eating? 

1.   Oranges
2.   Carrot
3.    Red meat
4.   Green vegetables
5.   Chicken

(vii) A blood vessel which conveys deoxygenated blood away from the heart is called?

1.   Capillaries
2.   Artery
3.    Veins
4.   Pulmonary vein
5.   Pulmonary artery.

(viii) Which of the following structure is a site of respiration?

1.   Chloroplast
2.   Ribosome
3.    Nuclear
4.   Nucleic acid
5.   Mitochondria.

(ix) The structures found in bacteria are:

1.   Plasmid, flagella and cilia
2.   Cytoplasm, cilia and plastids
3.    Cell wall, plasmid and flagella
4.   Cell membrane, flagella and hairs
5.   Plasmid, capsule and cilia.

(x) The by – products in photosynthesis process are:

1.   Carbohydrate and water
2.   Carbon dioxide and oxygen
3.    Oxygen and water
4.   Carbohydrate and carbon dioxide 
5.   Oxygen and air.

2. Matching items questions.

SECTION B: 60 MARKS.

4. (a) Define the following terms.

1.                     Ecology
2.          Environment
3.       Community
4.         Ecosystem.

 (b) (i) State the difference between natural and artificial ecosystems

 (ii) Explain why food webs are more representative of feeding relationship than food chains.

5. (a) (i) What is a tissue

(ii) Name three animal and plant tissues.

    (b) State the structural differences between cell wall and a cell membrane.

    (c) Describe the function of blood plasma.

6. (a) Explain the function of the following parts of compound microscope.

1.      Stage
2.    Eyepiece

(b) Name four (4) human diseases caused by viruses.

 (c) Mention four ways of helping a person who has been bitten by a snake.

7. (a) What is meant by the following terms.

1.            Digestion
2.          Malnutrition
3.       Balanced diet
4.        Nutritional disorder.

 (c) Explain why;

1.            One can swallow food while upside down?
2.          Digestion of starch does not continue in the stomach?
3.       Food in duodenum is alkaline
4.        One is advised to eat roughage although they do not have any nutritional value.

8. (a) Draw a large labeled diagram of villus found in the digestive system.

 (b) Name digestive juice produced by the liver and state the content of that juice.

 (c) Differentiate between the following terms.

1.            Breathing and respiration
2.          Inhalation and exhalation

9. Describe five distinctive features of kingdom plantae

10.  a) Mention two members of division coniferophyta

     b) State the distinctive features of conifers

11.  a) Briefly explain how fertilization takes place in conifers

     b) Outline the advantages and disadvantages of confers

SECTION C:

12. Write an essay on malaria using guidelines below.

1. Causes
2. Transmission
3. Signs and symptoms
4. Ways of prevention
5. Treatment of the diseases.

13. Discus the advantage and disadvantage of artificial and natural classification.

  14.  a) What is alternation of generation?

     b)    Explain how alternation of generation takes place in bryophytes.

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES

BIOLOGY   ANNUAL   EXAMINATION

FORM THREE-NOVEMBER 2021 

(For both School and Private Candidates)

CODE 033/1

TIME: 3:00 HOURS ___________________________________________________________                                                                                 

INSTRUCTIONS:

1.                This paper consists of sections A, B and C.
2.                Answer All questions in section A, B and two (2) question from section C, question (13) is compulsory.
3.                Write your Examination Number on every page of your answer booklet(s).

SECTION A (15 MARKS)

1.                Choose the correct answer

(i) Disease which spread quickly and affect the large number of people for a short  time is:

 A: Pandemic disease  B: Endemic disease

 C: Epidermic disease  D: AIDS

 E: Typhoid

(ii) On the microscope the STAGE is a part which:

 A: Direct the light to the object under observation

 B: Hold the object to be observed

 C: Move fine adjustment knob so as to obtain a clear mage of the object

 D: Magnify the object under observation

 E: Support the objective lens

(iii) Which of the following are hormone concerned with regulation of sugar

 in the blood 

 A: Adrenaline hormone, thyroxine hormone

 B: Auxins hormone and insulin hormone

 C: Prolaction, oxytocin

 D: Insulin, glucagon

 E: Oestrogen, progesterone

(iv) Oxygenated blood is found in arteries except:

 A: Aorta    B: Subclaria artery

 C: Pulmonary artery  D: Pulmonary vein

 E: Vein

(v) Blood group in genetics is an example of:

 A: Dominance   B: Continuous variation

 C: Gametogenesis  D: Epistosis

 E: Discontinuous variation

(vi) The word cell is derived from the Latic word “cellula” which means a:

 A: Unit of life    B: Little room

 C: Cork from the bark of the tree  D: Living thing

 E: Robert Hook

(vii) Organisms can either be:

 A: Unicellular or Prokaryote  B: Living thing or Eukaryote

 C: Living thing or Non-living thing D: Multicellular or Unicellular

 E: Multicellulalr or Unicellular  

(viii) Pick up the wrong statement

 A: All organisms respire   

 B: Some fungi are edible

 C: Protoctista have photosynthetic and heterotrophic mode of nutrition

 D: Cell wall is absent in Animalia

 E: Nuclear membrane is absent in Animalia

(ix) One of the major component of the cell was of most fungi is:

 A: Chitin   B:     Cellulose                      C:   Starch   

 D: Lipids   E:      Phospholipid bilayer

(x) Group of sporangia borne on the underside of fern leaves are called:

 A: Tholus   B: Protholus  C: Fronds

 D: Fiddle head  E: Sori

2. Match the functions of components of the skeleton in List A with their corresponding components of the skeleton in List B by writing the letter of the correct response beside the item number in the answer booklet provided.

SECTION B:

2.                (a) Define the following terms as used in Biology

 (i) An accident

 (ii) Burning

 (iii) Safety

 (iv) First aid kit

(b) Explain shortly why is important to dispose waste properly

3.                It has been observed that some people dispose waste around the lake which supply water to the surrounding community. Briefly explain three problems which are likely to happen to the area.

4.                Study carefully the following food chain then answer the questions that follow:

(a) Which of the above organisms are:

 (i) Herbivores                        (ii)     Consumers

(b) (i) Name other organisms that can replace the bacteria from the food chain in                              5 above

 (ii) Outline two advantages of food chain

5.                Alex complain of having burning sensation around the chest region

 (a) What digestive order is the facing?

 (b) Give three measure he should take to treat the disorder

6.                (a) What is the difference between first aid and first aid kit?

(b) Outline five (5) importance of first aid to a victim

7.                (a) Differentiate between responsible behaviour and risky behavior

(b) State two behaviors which may lead to the following risks

 (i) STD’s

   (ii) HIV infections

   (iii) Drug abuse

   (iv) Unplanned pregnancies

(c) Suggest two (2) ways on how to care and support a victim of HIV/AIDS.

8. (a) List any four macro-elements in plant nutrition.

(b) Explain the causes of any three common disorders and diseases of the human digestive system.

9.                Consider that you are medical doctor and you have received a patient whose investigation a diagnosed kidney stone.

Suggest to the patient three possible causes and three control measures for kidney stones.

10.            Reptiles are organisms whose body temperature is affected by environmental temperature. Briefly explain two ways that help reptiles to survive in different weather condition.

         12. (a) Briefly explain three importance of movement in plants and animals.

(b) State any five functions of the skeleton.

SECTION C

Answer two questions from this section, question number 13 is compulsory

13.            Briefly explain the HIV/AIDS basing on the following guidelines

•                  Meaning
•                  Mode of transmission
•                  Symptoms
•                  Preventive measures
•                  Effects
•                  Treatment/cure

  14. (a) (i) List the five kingdoms into which organisms are placed.

             (ii) List the distinctive features of members of the kingdom to which a malaria vector belongs.

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPETENCE BASED SECONDARY EXAMINATION SERIES

BIOLOGY 1MID TERM EXAMINATION

FORM THREE-AUG/SEPT 2021

Time: 3Hours

Instructions.

1. This paper consists of section A, B and C with a total of 15 questions.
2. Answer all questions in section A and B and TWO  (2) question from section C in which question 13 compulsory.
3. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4. Cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your number on every page of your answer booklet.

 SECTION A (20 Marks)

 Answer All questions in this section.

1. For each of the items (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer booklet provided.

(i) A biologist discovered a new cell in a culture. The new cell had a distinct cell wall but it did not have a definite nucleus. The cell is most likely to be:

1. Fungi
2. Prokaryote 
3. Protozoa 
4. Virus 
5. Eukaryote

(ii)Oxygen debt occurs when:

1. Too much carbon dioxide is present in the body. 
2. The rate of respiration exceeds that of photosynthesis in green plants.
3. Alcohol is formed in tissues. 
4. There is insufficient oxygen in the muscle tissues during strenuous exercise. 
5. There is insufficient lactic acid in muscle tissues.

(iii) Green plants are known as producers because they:

1. produce chlorophyll in chloroplasts
2. produce green leaves
3. contain fruits and seeds
4. grow in fertile soil
5. make food from simple stibstances

(iv) Which of the following prevents surfaces of the articulating bones from being worn out by friction?

1. Capsular ligament
2. Synovial membrane
3. Articular cartilage
4. Tendon
5. Synovial capsule

(v) The best distinction between diastolic and systolic blood pressure is that:

1. Diastolic blood pressure is caused by contraction of ventricles while systolic blood pressure is caused by contraction of auricles.
2. Diastolic blood pressure causes blood from contracting auricles to flow into ventricles while systolic blood pressure causes blood from contracting ventricles to flow into pulmonary artery and aorta.
3. Diastolic blood pressure is the same as systolic blood pressure. Therefore there is no distinction.
4. Diastolic blood pressure is lower than systolic blood pressure.
5. Diastolic blood pressure is common.

(vi)In green grass there are usually large numbers of green grasshoppers than brown grasshoppers. The best explanation is that the:

1. green grasshoppers feel the need of being green to give them protection.
2. predators do not capture green grasshoppers as frequently as brown grasshoppers.
3. green grass makes the brown grasshopper not to be seen by the predators.
4. green grasshoppers obtain enough food from green grass than brown grasshopper.
5. green grass stimulates green grsshoppers to reproduce and increase in number faster than brown grasshoppers.

(vii) Why are skeletal muscles usually found in opposing pairs?

1.  One muscle alone cannot extend a joint
2.  Muscles can only work by contraction
3.  One muscle alone cannot flex a joint
4.  Paired muscles are stronger
5.  Muscles normally work in antagonistic fashion

(viii) When students were conducting private study at night, lights went off completely. Which of the following changes occurred in the eyes of the students?

1.  The lens became thicker
2.  The pupil became larger
3.  The ciliary muscle relaxed
4.  The lids close
5.  The eyes opened wider

(ix) Which hormones produced by the pituitary gland promote ovulation?

1. Follicle stimulating hormone (FSH) and lutenizing hormone (LH)
2. Lutenizing hormone (LH) and progesterone
3. Oestrogen and progesterone
4. Progesterone and follicle stimulating hormone (FSH)
5. Prolactin and progesterone

(x) A mountaineer develops headache, breathlessness, nausea and vomiting on reaching an altitude of above 4000 metres. This is because: 

1. his body system is not given time to adjust to the low oxygen pressure.
2. the atmospheric pressure as well as the supply of oxygen decreases at higher altitude.
3. the increase in the amount of oxygen results into breåthlessness.
4. the atmospheric pressure increases at higher altitude and so does the supply of oxygen.
5. his body system is not given time to relax due to the increase of atmospheric pressure.

2. Match the items in List A with the List B by writing the letter of the correct responsible beside the item number.

SECTION B (60 Marks)

Answer all questions in this section.

4. In an experiment to investigate a factor affecting photosynthesis, a potted plant which had been kept in the dark overnight was treated as shown in the diagram below and exposed to light.

(a) Why was the potted plant kept in the dark overnight? (1 mark)

(b) Which factor was being investigated in the experiment? (1 mark)

(c) (i) Which test did the students perform to con?rm photosynthesis in the leaves labelled P and Q? (1 mark)

(ii) State the results obtained in the leaves labelled P and Q.

P (1 mark)

Q (1 mark)

(iii) Explain the results obtained in the leaves labelled P and Q.

P .........................(1 mark)

Q..........................(l mark)

(d) What was the purpose of leaf Q in the experiment? (1 mark)

4.How do plants get rid of excretory products? Briefly explain three ways.

5.  Give four differences that exist between insect pollinated flowers and wind pollinated flowers.

6. (a) How could the body remove or destroy a bacterium that lands:

(i) on the cornea?

(ii) on the hand?

(iii) in the bronchus? (iv) in the stomach?

7. (a) (i) Define the term mitosis.

(ii) Outline the significance of mitosis to organisms.

8. (a) Explain the adaptation of the lungs for gaseous exchange.

(b) What is the biological importance of shivering during cold weather?

(c) Explain why some trees are killed when a ring of bark is removed from their stems.

9. Explain the effects of increased physical activity on the following organ systems:

1. Heart
2. Lung
3. Skin
4. Kidney

10.  Describe the role of hormones in the human menstrual cycle.

11. Below are diagrams of a cell organelle obtained from different organs of an animal.

(a) (i) For each organelle state an organ in the urinary system where it is likely to be found.

(ii) Give a reason for your answers in (a) (i) above (2 marks)

(b) Name the part of the chloroplast where the following reactions occur:

(i) Carbon(IV) oxide fixation(1 mark)

(ii) Photolysis (1 mark)

12. Explain the survival values of the following tropic responses to plants.

(a) Geotropism (2 marks)

(b) Phototropism. (1 mark)

SECTION C (25 Marks)

Answer two (2) questions from this section. Question 13 is compulsory.

13.   Explain the functions of the major components of the human skeleton and their adaptations.
14. Explain two differences between artificial and natural classification systems and indicate the two merits and demerits for each system..

15. (a) Differentiate between responsible behaviours and risky behaviours.

(b) State two behaviours which may lead to the following risks:

(i) STDs

(ii)HIV infections

(iii)Drug abuse

(iv)Unplanned pregnancies

(c) Suggest how victims of HIV/AIDS can be cared and supported.

THE PRESIDENT’S OFFICE

MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

COMPETENCE BASED SECONDARY EXAMINATION SERIES

BIOLOGY 1  TERMINAL  EXAMINATION

FORM THREE-2021

Time: 3Hours

Instructions.

1. This paper consists of section A, B and C with a total of 15 questions.
2. Answer all questions in section A and B and TWO  (2) question from section C in which question 13 compulsory.
3. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4. Cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your number on every page of your answer booklet.

 SECTION A (20 Marks)

 Answer All questions in this section.

1. For each of the items (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer booklet provided.

1. Which nutritional disorder may result when a person takes larger quantities of carbohydrate than body's requirements?

1. Rickets
2. Marasmus
3. Beriberi
4. Kwashiorkor

2. What is the role of the cerebrum in human beings?

1. Breathing
2. Sneezing
3. Yawning 
4. Learning
5. Walking

3.                     In which specific part of the female reproductive system is tubal ligation applied as a method of birth control?

1. Oviduct
2. Uterus
3. Cervix 
4. Ovary 
5. Vagina

4.                      In the food chain: Grass  Lion. A lion is:

1. a primary consumer.   
2. a secondary consumer.
3. a producer. 
4. a tertiary consumer. 
5. a decomposer.

5. Water from the roots of flowering plants is transported up to the plant by different forces. Which of the following forces initiates and raises water to the least height? 

1. Root pressure 
2. Transpiration pull
3. Cohesion forces                     
4. Adhesion forces
5. Capillarity

6.                      A patient has been diagnosed with low level of blood sugar. Which hormone would you recommend to regulate the victims sugar? 

1. Insulin 
2. Glucagon
3. Antidiuretic 
4. Aldosterone 
5. Testosterone

7.                   The function of hydrochloric acid in food testing experiment is

1. to decolourise food sample 
2. to test reducing sugar 
3. to oxidize the food sample 
4. to neutralize sugary foods 
5. to hydrolyze complex to simple sugar.         

8.                The interaction between two species in which both organisms benefit is known as

1. ectoparasite 
2. parasitism 
3. commensalisms 
4. mutualism 
5. endoparasite.         

9.                      Which of the following is NOT a component of First Aid Kit?

1. Razor blade 
2. Panadol 
3. Bandage 
4. Soap 
5. Microscope. 

10. Which disease spread rapidly as a result of poor waste disposal?

1. Anemia
2. AIDS
3. Cholera
4. Leukemia
5. Small pox.

2. Match the functions of the parts of microscope in List A with their corresponding parts of microscope in List B by writing the letter of the correct response beside the item number in the booklet provided.

SECTION B (60 Marks)

Answer all questions in this section.

3. (a) Differentiate the term "Biological apparatus" from "Biology Laboratory".

(b) Briefly explain why the following substances are dangerous?

1. Toxic substances
2. Highly flammable
3. Corrosive substances
4. Radioactive substances.

4. The diagram below illustrates a specialised cell obtained from a certain tissue.

(a) Name the cell.

(b) State the ways in which the cell is structurally adapted to its function. 

5. While investigating a certain metabolic process in plants, students set up the apparatus as shown below in a classroom and monitored it for 48 hours.

(a) Identify the metabolic process under investigation.

(b) Account for the observations made in the test tube at the end of the investigation.

6. The chart below illustrates how respiratory gases are transported in the human blood.

(a) Identify gas Q. 

(b) Explain the advantage oxyhaemoglobin has over carboxyhaemoglobin.

7. ln an experiment, students treated seedlings as illustrated below.

(i) Account for the observations made in seedling 1 

(ii) Explain the similarity in the end results made in seedlings II and II 

(iii) State the likely treatment that would make seedlings II and III respond like seedling I. 

8. (a) Explain the distinctive features of the Division Filicinophyta.

(b) Draw a well labeled diagram of a fern plant.

9. A person accidentally touches a hot pan and responds as illustrated in the diagram below.

 Explain how the response illustrated above occurs. (6 marks)

10. A group of font two students placed a fresh leaf in warm water. They observed that air bubbles formed on the surface of the leaf.

(a) What biological process were they investigating?

(b) Name the structures from which the air bubbles were coming from.

(c) Explain the distribution of the structures named in (b) above on the leaf surfaces of a land plant.

11. (a) State why it is important for plants to lose water to the atmosphere.

(b) State three activities in the human digestive system that depend on respiration.

12. The diagram below represents an organ in a bony fish.

(a) Name the organ.

(b) Describe how air in water reach the capillaries inside structure L.

SECTION C (25 Marks)

Answer two (2) questions from this section. Question 13 is compulsory.

13. Describe what happens to a meal rich in proteins along the alimentary canal from ingestion to egestion. 

14. Describe how the mammalian eye is structurally adapted to its function.

15. Using a relevant example in each case, describe simple and conditional reflex actions.

THE PRESIDENT’S OFFICE MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

SECONDARY EXAMINATION SERIES

BIOLOGY 1 MID TERM EXAMINATION

FORM THREE-2021

Time: 3Hours

Instructions.

1. This paper consists of section A, B and C with a total of 15 questions.
2. Answer all questions in section A and B and TWO  (2) question from section C in which question 13 compulsory.
3. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4. Cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your number on every page of your answer booklet.

SECTION A (20 Marks)

Answer All questions in this section.

1. For each of the items (i)-(x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer booklet provided.

1. Which of the following are parasitic eukaryotic organisms?

1. Amoeba and paramecium
2. Euglena and green algae
3. Trypanosome and plasmodium
4. Brown algae and amoeba
5. Plasmodium and amoeba.

(ii) The outer most living structure in plant cells is the;

1. Cell wall
2. Cytoplasm
3. Cell membrane
4. Nuclear membrane
5. Ectoplasm.

(iii) The part of cassava plant which is modified for food storage is;

1. An underground stem
2. An underground root
3. A corn
4. A prop root
5. An underground stalk.

(iv) The human body can make one of the following vitamins for itself;

1. Vitamin A
2. Vitamin B
3. Vitamin K
4. Vitamin D
5. Vitamin E.

(v) Examples of diseases caused by bacteria are?

1. Tuberculosis, cholera and gonorrhea.
2. Malaria, bilharzias’ and cancer
3. Elephantiasis, AIDS and sleeping sickness.
4. Measles, amoebic dysentery and chickenpox
5. Common cold, Typhoid and cholera.

(vi) Which of the following is common to both plants and animals?

1. Respiration
2. Digestion
3. An excretory system
4. Chloroplasts.
5. Starch grains.

(vii) The Monera are also referred to as Prokaryotes. This means having;

1. No nucleus
2. Membrane bounded organelles
3. Simple structure.
4. Reduced nucleus.
5. Circular nucleus.

(viii) Food is moved along the oesophgus by a process known as:-

1. Assimilation
2. Chewing
3. Egestion
4. Peristalsis
5. Churning

(ix) Removal of predators in the ecosystem will result in;

1. Decrease in the number of producers
2. Increase in the number of producers
3. Decrease in the number of prey
4. An increase in the number of decomposers
5. No significant change.

(x) Which of the following best defines allergy?.

1. Body reaction to antigen
2. Body reaction against a specific drug.
3. Body reaction against a disease – causing micro – organism.
4. Accumulation of mucus caused by inhaling dust particles.
5. Formation of rash causes by eating specific foods.

2. Matching items questions.

SECTION B (60 Marks)

Answer All Questions in This section

3. (a) What is blood circulation?

(b) Give four importance of blood circulation

(c) Name two disorders of human circulatory system.

4. (a) What do you understand by term “Diffusion”?

(b) Name structures concerned with gaseous exchange in plants

(c) Explain mechanism of gaseous exchange in man.

5. (a) Outline four reasons for studying Biology in schools.

(b) Define Respiration

(c) Give five features of respiratory surfaces.

6. (a) What do you understand by the term laboratory?

(b) Outline four qualities of a good laboratory

(c) Give functions of the following apparati.

1. Petri dish
2. Mortar and pestle
3. Hand lens
4. Thermometer.

7. (a) Define the term health.

(b) Mention four factors affecting health.

(b) Name causative agent of the following.

1. Common cold
2. Cholera
3. Dysentry
4. Bilharzia

8. (a) Give two differences between cell membrane and cell wall

(b) What is the importance of cell differentiation to an organism

9.(a) State the general characteristics of kingdom plantae

(b) Briefly explain the differences between monocots and dicots.

10. (a) What is movement?

(b) Describe the role played by skeleton in human body

11. Juma complains of a burning sensation around the chest region

(a) What do you think is his problem
(b) Give five measures he should take to treat the disorder

12. Waste from homes can have several beneficial uses. Elaborate.

SECTION C (25 marks) ESSAY QUESTION

Answer two questions from this section. Question 13 is compulsory.

13. Write an essay on typhoid using guidelines below.

1. Meaning
2. Cause
3. Symptoms
4. Effects
5. Prevention and control

14. Write an essay on waste disposal using the guidelines below.

1. Meaning of Waste
2. Meaning of Waste disposal
3. Types of Wastes
4. Ways of disposing wastes.
5. Effects of poor waste disposal

15. Viruses can be both harmful and beneficial, elaborate this statement.

THE PRESIDENTS OFFICE MINISTRY OF LOCAL GOVERNMENT AND REGIONAL ADMINISTRATION

MIDTERM MARCH EXAMINATION 2021

BIOLOGY FORM III

1. For questions (i) –(x) choose the best answer from the alternatives given and write it in the box provided.

1. Which of the following is not a plant?

1. Moses
2. Liverwort
3. Toadstool
4. Fern
5. Pine

2. The blood vessel that carries blood to the heart muscles is called

1. Vena cava
2. Coronary artery
3. Coronary vein
4. Pulmonary artery
5. Septin.

3. Which hormone is responsible for apical dominance?

1. Auxin
2. Gibberellins
3. Acetylene
4. Oxytoxin

4. Which of the following products of respiration is not produced by plants?

1. Energy
2. Water
3. Alcohol
4. Carbon dioxide
5. Lactic acid

5. Which of the following is not a member of kingdom fungi?

1. Toadstool
2. Moses
3. Mushroom
4. Yeast
5. Penicillium

6. Which of the following is not function of skeleton in man?

1. Support
2. Making blood cells
3. Protection
4. Transport
5. Movement

7. Which of the following is not a future of dicots?

1. Parallel venation
2. Network veins
3. Tap root
4. Two cotyledons
5. Flowers are multiple of four or five

8. Suppose you are provided with small sections of cells from different organisms, which instrument will you use to identify them?

1. Test tube
2. Watch glass
3. Microscope
4. Petri dish
5. Beaker

9. What is the role of cerebrum in human beings?

1. Breathing
2. Sneezing
3. Yawning
4. Learning
5. Walking

10. Why is transfusion of blood from a donor with group O to a recipient with blood group AB successfully?

1. The recipient blood has no antibodies
2. The recipient blood has no antigens
3. The donor blood has many antigens
4. The donor blood has many antibodies
5. The recipient blood has antigen O

2. Match the phrases in List A with the responses in list B by writing the letter of the correct answer below the corresponding item number in the table provided.

SECTION B ( 60 Marks)

Answer all questions in this section.

3. (a) Poor laboratory building can be a source of accidents, justify using four points.

(b) State four apparatus that can be used to measure volume

4. (a) Briefly explain the mechanism of gaseous exchange in insects such as grasshopper.

(b) Using chemical equation, show the product of anaerobic respiration in plants.

5. (a) Explain why ecological pyramids tapper towards the end

(b) what role does bacteria and producers play in an ecosystem?

(c) using a well labeled diagram, explain how carbon circulates in the atmosphere.

6. (a) What is transpiration?

(b) Explain the environmental factors that affect the rate of transpiration

(c) Draw the external structure of a leaf

7. Briefly explain the importance of Photosynthesis in living organisms
8. Viruses are both beneficial and harmful, briefly explain
9. (a) What is classification? Mention two types of classification

(b) Give the advantages of classification.

10. (a) Differentiate between food processing and food preservation

(b) What are the advantages and disadvantages of traditional methods of food preservation?

11. (a) What is first Aid?

(b) Explain why first Aid is important to an accident victim

12. Explain ways in which waste can be made beneficial to man

SECTION C ( 25 Marks)

(Answer only 2 Questions)

13. Corona virus 2019 has being declared a pandemic by World Health Organization.

1. What do you understand by the term pandemic?
2. What is the cause of covid-19
3. Explain five signs and symptoms of covid-19
4. Suggest measures to be taken to control the spread of covid-19

14. Malaria is very common in many African countries, briefly discuss the cause, transmission, signs and symptoms and control of malaria.
15. Discuss the economic importance of kingdom fungi to human beings.

PRESIDENT'S OFFICE 
REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT 
ANNUAL EXAMINATION 
BIOLOGY F3- FORM THREE

NAME………………………………………..CLASS……………………………TIME: 3HRS

INSTRUCTIONS:-

1. This paper consists of sections A, B and C
2. Answer all questions
3. All answers must be written in the spaces provided
4. All writings should be in blue/black inks except for drawings that should be in pencils

SECTION A (15 Marks) 

Answer all questions in this section

1. Multiple choice questions. Choose the best answer in each case and write down its letter beside the question.

1. The rate of photosynthesis is greatly influenced by the following factors except;

1. Temperature
2. Water
3. Soil fertility
4. Carbondioxide
5. Light intensity

2. How many gametes are produced from one cell during meiosis;

1. Two    B. Four   C. Six   D. Eight    D. Ten

3. Which of the following is not an excretory product in plants;

1. Tannis
2. Carbondioxide
3. Urea
4. Calcium oxalate
5. Latex

4. Which of the following organism belong to phylum protozoa;

1. Mushroom
2. Spirogyra
3. Funaria
4. Tick
5. Amoeba

5. One of the following is not part of the reproduction system of a female mammals;

1. Uterus
2. Urethra
3. Oviduct
4. Vagina
5. Ovary

6. Which of the following is the most important basic difference between plants and animals;

1. Growth
2. Locomotion
3. Nutrition
4. Irritability
5. Excretion

7. The part of a brain responsible for reasoning and imagination is known as;

1. Spinal cord
2. Medulla Oblongata
3. Cerebrum
4. Cerebellum
5. Brain chamber

8. By which process does Carbondioxide pass from the blood to alveoli of the lungs;

1. Osmosis
2. Oxidation
3. Transpiration
4. Diffusion
5. Respiration

9. In which category malpighian layer of mammalian skin is placed?

1. Tissue
2. Organ
3. Cell
4. System
5. Organism

10. A group of animals that maintain the body temperature at more or less constant is;

1. Regulators
2. Cold blood animals
3. Warm blood animals
4. Poikilotherm
5. Homoeotherms

2. Matching item questions. Match the items in List A with the correct responses in List B by writing the letter of the correct responses beside the item number.

SECTION B: 60 MARKS

Answer ALL questions in this section

3. (a) Define each of the following;

1. First Aid
2. Recycling
3. Waste

(b) What is the most productive way of recycling garden and kitchen organic matter? 

(c) Give two (2) important of First Aid. 

4. (a) i.  What is a reflex action

ii.Give four examples of reflex actions. 

iii. Explain the importance of reflex actions to animals. 

(b) i.State two difference between nervous control and hormonal control. 

ii. State the components of the central nervous system. 

5. (a) Explain the meaning of the following terms;

1. Transportation of materials
2. Mass flow

(b) Explain what would happen when a plant cell is placed in hypertonic solution. 

6. (a) i. The kingdom plantae is divided into different divisions. Mention them.

ii. Give one examples of the plants which are found in each division. 

(b) i. Identify structures found in plant cell only. 

ii. Describe the functions of each structure identified in (b) (i) above. 

7. Study the diagram below which shows a part of the human uniferous tubule then answer the questions that follow;

(a)i. Name the parts labeled A, B and D. 

ii. What is the name given to fluid labelled C? 

3. Name two (2) components of blood that will not diffuse into the part labeled C.
4. Name a nitrogenous waste which is present in urine but absent in the part labelled B.

(b)List the process involved in urine formation. 

8. (a) State three factors affecting gaseous exchange in animals.

(b) Why tadpoles dies when taken out of water to the land. 

9. (a) i. Identify two common features present in a villus and alveolus.

ii. Mention the roles played by the villus and alveolus respectively. 

(b) What are the respiratory surfaces for each of the following organisms?

i. Amoeba

ii. Fish

iii. Grasshopper

iv. Rose plant 

10. (a) Define the following terms as used in reproduction;

1. Fertilization 
2. Ovulation

(b) Name and explain how two types of twins occur. 

11.(a) Explain the meaning of the following ecological terms;

(i)Food chain(ii) Trophic level 

(b) GrassMouseSnakeHawkBacteria 

From the above chain identify the organ which is;

(i)A primary producer 

(ii)A tertiary consumer 

(iii)Herbivores 

(iv)Carnivores 

(v)What is a role of bacteria in the chain above 

12. (i) What is classification?

(ii) State three distinctive features of the kingdom plantae 

(iii) What is meant by the term “Sporophyte”. 

(iv) With one example each list six phylum belong to the kingdom protoctista. 

SECTION C: 20 MARKS

Answer ONLY ONE (1) questions from this section.

14. Write an essay on pollination in plants under the following headings; 

(a)Meaning of pollination 

(b)Types of pollination 

(c)Agent of pollination 

(d)Characteristics of wind pollinated (4 point) and insect pollinated flowers (4 points). 

15. Discuss the economic importance of fungi. Give examples where necessary. 

THE PRESIDENT'S OFFICE

MINISTRY OF REGIONAL GOVERNMENT AND LOCAL GOVERNMENT

AUGUST-SEPTEMBER   EXAMINATION SERIES

BIOLOGY  FORM-3

2020

TIME: 2:30 HRS

Instructions

1. This paper consists of sections A, B and C with a total of fifteen (15) questions.
2. Answer all the questions in sections A and B and two (2) questions from section C of which question 13 is compulsory.
3. All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.
4. Cellular phones and any unauthorised materials are not allowed in the examination room.
5.  Write your Examination Number on every page of your answer booklet(s).

SECTION A (15 Marks)

Answer all questions in this section.

1 For each of the items (i) - (x), choose the correct answer from among the given alternatives and write its letter beside the item number in the answer booklet provided.

(i) What is the aim of doing experiment when conducting a scientific investigation?

1.  Identifying a problem 
2.  Finding a solution 
3.  Testing a hypothesis 
4.  Gathering information 
5.  Recording results

(ii) What is the role of node of ranvier in a neurone?

1. To transmit the impulses away from the cell body.
2. To insulate the axon and speed up transmission of impulses.
3. To transmit nerve impulses from one nerve to another.
4. To speed up the transmission of nerve impulses.
5.  To transmit the nerve impulses towards the cell body.

(iii) flow many gametes are produced from one cell during meiosis?

1. Eight 
2. Two  
3. Four 
4. Six 
5. Ten.   

(iv) Which of the following is the excretory organ in human?

1. Mouth 
2. Kidney 
3. Pancreas 
4. Stomach 
5. Anus.   

(v) The function of the bright coloured petals in flowers is

1. to store nectarines 
2. to hold sepals in position 
3. to produce colour of the flower 
4. to receive pollen grain 
5. to attract insects for pollination.

(vi) The function of hydrochloric acid in food testing experiment is

1. to decolourise food sample 
2. to test reducing sugar 
3. to oxidize the food sample 
4. to neutralize sugary foods 
5. to hydrolyze complex to simple sugar.   

(vi)  Goitre is a deficiency disease caused by lack of which element in the diet?

1.  Carbohydrate 
2. Iodine 
3. Vitamin E 
4. Vitamin C
5.  Protein.

(vii) The product of anaerobic respiration process in animals is

1.  lactic acid   
2. carbondioxide  
3. alcohol
4. water  
5.  oxygen.

(viii) Which disease spread rapidly as a result of poor waste disposal?

1. Anemia
2. AIDS
3. Cholera
4. Leukemia
5. Small pox.

(x) A voluntary muscle that is capable of relaxing continuously and do not fatigue easily is known as

1.  skeletal muscle
2. biceps
3. triceps
4. cardiac muscle
5. smooth muscle. 

2. Match the responses in List B with the phrases in List   A by writing the letter of the correct response from List B beside the item number of List A in your answer booklet.

SECTION B (60 Marks)

Answer all questions in this section.

3. (a) Differentiate the term "Biological apparatus" from "Biology Laboratory".

(b) Briefly explain why the following substances are dangerous?

1. Toxic substances
2. Highly flammable
3. Corrosive substances
4. Radioactive substances.

4.  (a) State two principles of waste disposal.

(b)  Suggest three proper ways of waste disposal in the community.

5. (a) Explain the distinctive features of the Division Filicinophyta.

(b) Draw a well labeled diagram of a fern plant.

6. (a) List any two types of blood cells.

(b) Give two differences between arteries and vein.

7. (a) State three basic principles of waste disposal.

(b) Why poor waste disposal at home is said to cause adverse effects?

8. (a) Give the meaning of the following terms:

1. Vegetative propagation.
2. Gamete.

(b) Explain the merits and demerits of asexual reproduction in plants.

9. (a) Define the term “osmoregulation”.

(b) Briefly explain the mechanisms of regulating sugar level in the blood.

10. (a) Explain the functions of the vascular system in plants

(b) State three importance of transportation of materials in living things.

11.  Consider that you are a medical doctor and you have received a patient whose investigation has diagnosed kidney stones. Suggest to the patient three possible causes and three control measures for kidney stones.

12. Reptiles are organisms whose body temperature is affected by environmental temperature. Briefly explain three ways that help reptile to survive in different weather conditions.

SECTION C

13. Explain any four effects of irresponsible sexual behaviour and suggest five ways of eradicating those behaviours in the community.

14. Describe four similarities and seven differences between insect and wind pollinated flowers.

15. Write an essay on transportation in plants using the following guidelines:

1. Meaning of transportation
2. The importance of transpiration
3. The adaptation of features which enable plants to reduce water loss