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.

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

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.

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.