BIOLOGY FORM FOUR REGIONAL EXAMS (MOCK, PRE-NATIONAL, etc.)

 TANZANIA HEADS OF ISLAMIC SCHOOLS COUNCIL FORM FOUR INTER ISLAMIC MOCK EXAMINATION

033/1 BIOLOGY 1

(For Both School and Private Candidates)

Time: 3 Hours Monday, 12th September 2022 a.m.

Instructions

1. This paper consists of sections A, B and C with a total of fifteen (15) questions.

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

3. Section A carries fifteen (15) marks, section B carries twenty five (25) marks and section C carries forty five (45) marks.

4. All writing should be in blue or black ink except for diagram that must be drawn in pencil.

5. Cellular phones 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 (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) 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.

(ii) 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.

(iii) Form four students of Mwanamutapa Secondary School conducted a scientific research and wrote a very good report. What name is given to the summarized statement of their findings?

  1. Problem identification
  2. Hypothesis
  3. Conclusion
  4. Data collation 
  5. Data interpretation.

(iv) Mr. Baraka visited his maize plantation and discovered that the maize had stunted growth and leaves had turned yellow (chlorosis). Which mineral did his plantation lack? 

  1. Iron
  2. Calcium
  3. Nitrogen
  4. Sulphur
  5. Potassium.

(v) 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.

(vi) Mwalimu Mujahid had a morning jog from Msamala to Peramiho (30km). After this vigorous exercise, the blood leaving his muscles is expected to have:

  1. More carbondioxide, more oxygen and more glucose
  2. Less carbondioxide, less oxygen and less glucose
  3. More carbondioxide, more oxygen and less glucose
  4. More carbondioxide, less oxygen and more glucose
  5. More carbondioxide, less oxygen and less glucose.

(vii) In a car accident which occurred near central police station this morning, people brought different components in an attempt to help the victims such as soap, wire gauze, iodine tincture, pain killer and anti-malaria drugs. Identify one component which not belong to the first aid kit.

  1. Anti-malarial drugs
  2. Pain killers
  3. Soap
  4. Iodine tincture
  5. Wire gauze.

(viii) 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.

(ix) Form four students were presented with two cells: Cell A (Plant cell) and Cell B (animal cell). Which feature can be used to differentiate cell A from B?

  1. Presence of mitochondria
  2. Presence of vacuole
  3. Presence of cell wall 
  4. Presence of cell membrane
  5. Presence of cytoplasm.

(x) A pond was observed to contain 32,000 microscopic plants, 22,100 mosquito larvae, 15,671 small fish and 65 crocodiles. Suggest the position of the small fish in this ecological niche: 

  1. Primary producers
  2. Tertiary consumers
  3. Secondary consumers
  4. Primary consumers 
  5. Quaternary consumers.

2. Match the description of genetic terms in LIST A with the corresponding genetic terminologies in LIST B by writing the letter of the correct response beside the item number in the answer booklet.

LIST A

LIST B

(i) A sudden change in the genetic make-up which can be inherited 

(ii) Alternative form of a gene controlling the same character but producing different effect

(iii) Results from an interaction between genotype and the environment 

(iv) Aims to determine the genotype of unknown organism showing dominant phenotype

(v) Comprises of ribose sugar, pontoze sugar and an organic base

  1. Genotype
  2. Nucleotide
  3. Testcross
  4. Backcross
  5. Phenotype
  6. Mutation
  7. Allele

SECTION B (60 Marks)Answer all questions in this section

3. (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

4. My parents planted viable seeds of maize in last agricultural season but none of them germinated.

(a) State three (03) causes that may hinder the above process.

(b) Suggest three (03) possible ways to make the above seed germinate.

5. A form one boy shared his experience with you that he can only see near object clearly but distant object appears blurry.

(a) As a form four student, what name is given to the eye defect above and what are its cause?

(b) With the aid of a relevant diagram, show how his problem can be corrected.

6. A Blackman, an Arab, an Indian and English are all classified under one group and one scientific name Homo sapiens.

(a) Give three (3) reasons to support this grouping.

(b) State three (3) rules of the above naming process.

7. After nine months of pregnancy, Ummu Ayman gave birth to male babies who looked alike in almost all aspects and Ummu Atwiya gave birth to a boy and a girl, who did not resemble too much.

(a) What name is given to this type of pregnancy?

(b) What are the causes of this type of pregnancy?

(c) In what ways do the Ummu Ayman’s kids different from Ummu Atwiya’s kids?

8. The diagram below shows the T.S of the mammalian uriniferous tubule.

image

(a) Name the parts labelled A, B, C, D, E and F.

(b) Why is the above structure considered as a functional unit of the organ in which it belongs?

(c) State one biological significance of “different diameter” between vessel C and D.

(d) In reference to the above diagram, state one adaptation of camel to its habitat.

9. When Saada was fasting, she noticed the passing out of very little amount of highly concentrated urine and decided to ask her biology teacher about this situation and the teacher redirected back the same question to you:

(a) Give explanation for the above case.

(b) What would happen if Saada’s pituitary gland failed to secrete vasopressin?

10. While working in the field, one of your friends gets bitten by a snake. Outline the procedures you would follow to offer an assistance?

11. Maua who had blood group A was married to Majaliwa who had blood group B. Their first born (Kizibo) was found to have blood group O. Majaliwa denies the fatherhood of the child due to differences in blood groups. Use your knowledge of biology to clearly show Majaliwa that he is the legitimate father of Kizibo. (Genetic illustrations are important).

12. As you were watching the film “Tanzania - The Royal Tour” with your friend, some terminologies like.

(a) Ecology

(b) Population

(c) Habitat and 

(d) Predator

Seemed very strange to your friend. Explain to him the meaning of those terminologies.

SECTION C (25 Marks)Answer only two (2) questions from this section

13. At Lemira village, people have a belief that only those who are seriously sick should visit the hospital for VCT. This belief is totally wrong. Use six (6) points to show the wrong side of this belief.

14. One of your brothers refused to practice family planning and he wishes to have a child every year. Using four (4) points, convince him to accept this practice.

15. The origin and diversity of life are based on the contributions of theologians, philosophers and scientists. Clearly highlight these ideas (4 points).

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-86 YEAR-2022

THE UNITED REPUBLIC OF TANZANIA PRESIDENT'S OFFICE,  REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

ZONAL FORM FOUR MOCK EXAMINATION
(KATAVI, MBEYA, NJOMBE, RUKWA AND SONGWE REGIONS)

BIOLOGY

Time 3:00 Hours Year: 2022

INSTRUCTIONS 

  1. This paper consists of sections A, B AND C with a total of fifteen (15) questions
  2. Answer all questions in section A and B and two questions in section C. Question 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 writings should be in blue or black ink , except for diagrams that must be drawn in pencil
  5. Cellular phones and any unauthorized materials are not allowed in the examination room
  6. Write your examination number on every page of your answer sheets or booklet(s)

SECTION A: (15 MARKS) 

Answer All Questions

l . For each of the items (i) — (x) choose the most correct answer among the alternative and write its letter besides the item number on your answer sheet/booklet(s) provided

(i) Suppose you are using a microscope, which part of a microscope will you use to raise or lower the body tube in order to bring the image into focus ?

  1. Fine adjustment knob
  2. Dark and light stagé
  3. Hinge screw
  4. Body tube
  5. Objectives lens

(ii) 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

(iii) What will happen if the xylem tissue is destroyed in green plants?

  1. Transport of manufactured food will stop
  2. Absorption of water in plant body will stop
  3. Transport of water and minerals salts will stop
  4. Transport of respiratory gases in plant will stop
  5. Absorption of nutrients from the soil will stop

(iv) Which of the following are genetically identical

  1. Brothers and Sisters in the same family
  2. Seeds produced by the same tree
  3. Gametes from the same parents
  4. Cuttings taken from the same plants
  5. Fraternal twins

(v) In which specific part of the female reproductive system is tubal ligation applied as method of birth control. 

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

(vi) 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

(vii) Suppose your provided with housefly and ant , which equipment will you use to observe parts of the organisms mentioned clearly 

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

(viii)A sample was extracted from a certain organism and put on a microscopic slide for observations. Results showed that the sample had no nucleus. What is the name of the cell observed?

  1. Eukaryotic cell 
  2. Prokaryotic cell
  3. Plant cell
  4. Muscle cell
  5. Sperm cell

(ix) 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

(x) In a certain stage of mitosis, the centromere splits the sister chromatid separates from each other and start to move towards the opposite poles of the cells. Choose the correct stage of Mitosis which account for that; 

  1. Telophase
  2. Anaphase
  3. Metaphase
  4. Prophase
  5. Interphase

2. Match the descriptions in LIST A with their corresponding terminologies in LIST B by writing the letter of the correct response beside the items number in the answer booklet/sheets provided.

LIST A

LIST B

(i) Formation of male gametes

(ii) Monthly discharge of blood in women

(iii) Burrowing of blastoc»t into the uterine wall

(iv) Release of egg from the ovary

(v) Time between fertilization and birth

  1. Implantation
  2. Parturition 
  3. Fertilization
  4. Ovulation
  5. Oogenesis 
  6. Spermatogenesis
  7. Gestation period
  8. Menstruation

SECTION B: (60 MARKS) 
Answer all questions

3. Form one students in a certain school were interested to know how to classify wastes. Assume you are an expert; educate these students on four criteria used to classify wastes.

4. Form four students on their way back home found a five (5) year old boy with protruding stomach, dry and rough skin, reddish hair that fell easily and had no appetite.

(i) Name the disease the boy was suffering from.

(ii) What deficiency caused the disease?

(iii) What advice would you expect the Form four students gave to the parents of the boy?

(iv) Suggest the type of diet, which the boy may have been eating (suggest any three type of diet )

5. 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

6. (a) In a human urine sample, some sugar was detected during a laboratory test.

(i) What is the likely name of the detected sugar?

(ii) Name the hormone likely to be deficient in the body and the gland that produce it.

(iii) Name the disease that the person was Ii •ely to be suffering from.

(iv) What food would you recommend such a person to avoid?

(b) Why the concentration of urea in the Urine is much higher than its concentration in the glomerular filtrate?

7. Mwambipile camed out a survey to determine the number of organisms in (heir school garden. She recorded her finding in a table  as shown below;

Organism

Number of organism

Grasshopper

1500

Grass

220000

Hav, ks

10

Birds

200

(a) Which of the above organisms are

(i) Producers

(ii) Primary consumrs

(b) Draw a possible food chain to show the energy flow in the garden

(c) Is the food chain in 7(b) above stable? Give a reason for the answer given.

8. Mr. Chanjo is a Zoologist at Mwamanga Municipal Whose Rabbit farm has Varieties of Rabbits ha',ing different colours. In his attempt to increase the number of the red Rabbits he crossed Red Rabbit with White coloured Rabbits.

Unfortunately, all the Fl rabbits had brown colour which were not in the target of Mr. Chanjo

(i) Use genetic diagram to illustrate the result of Fl and F2 generation produced from Mr. Chanjo work.

(ii) Name the pattern of inheritance observed in the cross above.

(iii) Why brown colour was formed in Fl generation?

9. Mayele was making some tea for her mother. He accidentally touched the pan while switching off the stove. He pushed away the pan and poured all the tea.

(i) What is the name of that response

(ii) What is the name given to the pathway which describes the response in 9 (i) above

(iii) Illustrate the pathway of an impulse from the sense organ to effectors of the Mayele hand.

10. (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

l l . Kazinyingi is a football player at Mbuyu Football Club. When he was playing abmptly he fell down and started to make noise, while his left leg was not able to bend.

(a) What do you think happened to him?

(b) What are the common causes of the above problem that he faced? (Give four points)

12. Briefly explain four reasons why plants lack specialized excretory organs

SECTION C: (25 MARKS)

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

13. You are invited by students of Kitundu secondary school as a health officer. Explain to them five ways of avoiding risky situations, behaviours and practices that will help to lower the risks of HIV infection and STIs.

14.The basic idea of the origin of life is that at one time there was no life at all on earth and now there is a vast range of life forms. The questions arise to how and when life appeared. Justify this statement by giving five points.

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

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-80 YEAR-2022

PRESIDENT'S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

ARUSHA REGIONAL FORM FOUR MOCK EXAMINATION 

033 BIOLOGY 1

TIME : 3 Hours July 2022

INSTRUCTIONS

1. This paper consists of Section A, B and C.

2. Answer all questions in section A and B, and Only two (2) questions in section C of which question number 13 is Compulsory.

3. Write your NAME on each page of your answer sheet provided

4. Cellular phones and any unauthorized Materials are not allowed in the examination room.

5. Except for the diagrams which must be drawn by using pencils and labeled in INK all writing should be in BLUE / BLACK pen.

SECTION A (15 Marks)

Answer ALL questions in this section

1. You are given the items (i) — (x), choose the most correct answer among the given alternatives and write its letter against its item number.

(i) The purpose of examination in seientific procedures is to: -

  1. Identify the problem 
  2. Test the hypothesis 
  3. Display the results
  4. Confirm the conclusion 
  5. Predict results 

(ii) For an enzyme to work properly in cellular reactions, the optimum temperature in numerals should be: -

  1. 100C - 200 C
  2. 370C — 400C
  3. 0 0C - 10oc
  4. 200C - 300C
  5. 800C - 1000C

(iii) Disease which is common infection of the respiratory system is: -

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

(iv) When a fish is taken outside of water can die because

  1. It has no legs for walking
  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. Water on land flows faster than in rivers.

(v) The part of a compound Microscope which helps to concentrate light to the object under observation is: -

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

(vi) An individual obtain artificial active immunity through: -

  1. Sucking her / his mother's milk called colostrums
  2. Vaccination / Immunization
  3. Antibodies from another mother 
  4. Previous Infections
  5. Antibodies from his/ her mother

(vii) The feature of leaves which differentiate monocotyledon from dicotyledonous are:

  1. Monocotyledonae have narrow leaves with network veination
  2. Dicotyledonae have broad leaves with parallel veination
  3. Both have broad leaves and Network veination
  4. Monocotyledonae have narrow leaves and parallel veination 
  5. Dicotyledonae have narrow leaves and Network veins

(viii) If a parent has twelve chromosomes, how many Chromosomes will be in the daughter cells?

  1. Twenty-four 
  2. Thirty-six
  3. Eighteen
  4. Twelve 
  5. Ten 

(ix) Phylum chordata includes all animals that has:

  1. Past anal tail 
  2. Back bone 
  3. Warm and dry skin
  4. Mammary glands 
  5. They are aquatic

(x) Which of the following set of conditions are necessary for seed germination?

  1. Temperature, Soil and Water 
  2. Water and Carbon dioxide
  3. Water, Optimum temperature and food
  4. Water, temperature and food
  5. Water, Soil and food. 

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

LIST A

LIST B

(i) Prepare the wall for Pregnancy

(ii) The release of an ovum

(iii) The death of feats before it is born 

(iv) Physical and emotional climax during sexual intercourse

(v) Finger like extension from the oviduct' near the ovary


  1. Ovulation
  2. Orgasm
  3. Villi
  4. Acrosome
  5. Abortion
  6. Progesterone
  7. Still biffh 
  8. Oestrogen
SECTION B

Answer ALL questions in this section

3. Mlokozi accidentally fell in the class and was found not breathing. The students helped him to recover from breathing and then took him to a doctor for further treatment.

(a) What is the name of the process done by the students?

(b) What were the reasons for giving the process you named in (3a) above? Give four (4) points. 

(c) What were the qualities of the student who gave the process? Give 2 points.

4. Digestion is the process of breaking down food molecules into a form that can be absorbed and assimilated by the body. One of the parts of Alimentary canal. It serves as the end part of digestion process and absorption

(i) Name the part responsible for the phenomenon menti.oned above:

(ii) Describe four features of how it-is well adopted to the process mentioned above.

5. Most of the people in the society take oranges and other fruits so that to boost their immunity. Explain how can the following affected body immunity?

(a) Nutrition

(b) Incomplete treatment

(c)Vaccination

(d) Genetic disorders

(e)Age

(f) Attack by pathogen

6. (a) Explain what will happen if

(i) A grasshopper's head is immersed in water leaving its abdomen outside.

(ii) The mucus and hairs are removed from the human nose

(b) Explain why;

(i) It is not health to sleep in a closed room with many potted .plants?

(ii) A Tilapia fish die when taken out of water

(iii)Dangerous to sleep in a poorly ventilated room with a charcoal burner? 

(iv)Alveoli is supplied with a Network of blood capillaries? of 4


7. (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) Carbon dioxide

8. In a school garden, butterflies and bees were observed jumping from one flower to another. This action is said to be more important in fertilization in plant.

(i) Give the name of the process was facilitated by the action of this insects 

(ii) Explain the two types of the process named in (i) above.

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

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

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

10. A homozygous normal man is married to an albino woman. Using appropriate genetic symbols: 

(a) What are the genotypes of the parents?

(b) Using genetic diagrams show how the offspring were obtained

11. (a) Bean seeds placed in a closed bottle containing cold water swollen and started rotting instead of germinating. Why this?

(b) State how meristematic tissue in plant facilitate growth

12. (a) During cooking, a cook unfortunately touched a hot burning charcoal. He pulled his hand abruptly.

(i) What is the name of that response?

(ii) What is the name given to the pathway which describes the response in 12a(i) above? (b) Illustrate the pathway of an impulse from the sense organ to effectors of the cook's hand.

SECTION C

Answer ONLY TWO questions in this section. Question 13 is compulsory

13. Movement is very important in both plants and animals. Explain any four adaptive features of muscles to movement. State any three significance of tropism in plants,

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

15. Mr. Chapakazi is not aware Of what his granddaughter. One day he called his granddaughter and asked her to outline reasons why she„studies biology. Unfortunately, his granddaughter failed. As a form Four student help Mr. Chapakazi's granddaughter to answer the question from grandfather.


LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-62 YEAR-2022

PRESIDENT'S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

DAR ES SALAAM REGION & IRINGA- REGIONS FORM FOUR JOINT MOCK EXAMINATION - 2022

BIOLOGY - 1

CODE: 033/1

TIME: 3: 00 HOURS Tuesday 5th July 2022 A.M

INSTRUCTIONS

1. This paper consist of sections A, B and C with a total of fourteen (15) questions

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

3. Excepts for diagrams that MUST be in pencil all writing should be in blue or black ink

4. The work should be clearly seen and smart

5. Cellular phone and other unauthorized materials are NOT ALLOWED in examination room

SECTION A (15 Marks)

Answer all question in this section

1. For each of the item (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) Juma heard the phone ringing and ran pick it. The stimulus which provoked this response was

  1. Light
  2. Touch
  3. Sound
  4. Object of conduct
  5. gravity

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

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

(iii) A tapeworm has no alimentary canal and yet it is able to feed because:

  1. It is too fat to posses any food canal
  2. Its body surface can absorb digested food
  3. Its scolex has surckers
  4. It has a primitive transport system
  5. Its body is made up of proglottides

(iv) In green there are usually large number 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 grasshoppers not been seen by the predators
  4. Green grasshoppers obtain enough food from green grass than brown grasshoppers
  5. Green grass stimulates green grasshoppers to produce and increase in number faster than brown grasshoppers.

(v) The following are example of continuous variations in human, except one, which one is it?

  1. Sex
  2. Pigmentation
  3. Body weight
  4. Height
  5. Body mass

(vi) Which two bones form a ball and socket joint

  1. Humerus and Ulna
  2. Radius and scapula
  3. Radius and Ulna
  4. Scapula and humerus
  5. Skull and Coccyx

(vii) Amount of temperature in human body is constant, when amount of temperature deviate from normal, one of the following process regulate the body temperature. What is it?

  1. Painting
  2. Aestivation
  3. Vasodilation
  4. Hibernation
  5. yawning

(viii) Rickets is a common feature in young, children lacking one of the following vitamin;

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

(ix) Accumulation of lactic acid in Muscles is a result of ;

  1. Aerobic respiration in plants
  2. Anaerobic respiration in plants
  3. Anaerobic respiration in animals
  4. Aerobic respiration in animals
  5. Lack of water in a cell

(x) If you do not have gloves, you can also use . . . . . . . . . . .To protect your hands

  1. Socks
  2. Plastic bags
  3. Tins
  4. A piece of cloth
  5. Papers

2. Match the descriptions of the blood circulation system in List A, with their corresponding blood vessels in List B by writing the letter of the correct response beside the item number in the answer booklet provided.

LIST A

LIST B

(i) Carries deoxygenated blood away from posterior parts and hind limbs

(ii) Carries oxygenated blood towards liver

(iii) Carries oxygenated blood towards head and neck

(iv) Carries oxygenated blood toward Gonads

(v) Carries deoxygenated blood away from the kidney

  1. Carotid artery
  2. Hepatic artery
  3. Renal vein
  4. Renal vein
  5. Genital artery
  6. Genital vein
  7. Iliac vein

SECTION B (60 Marks)

3. Before students start conducting practical in the Biology laboratory, they are supposed to be kin with laboratory safety measures. List six (6) possible causes of laboratory accidents which may likely to occur in the biology laboratory as a results of student failure to be kin with those laboratory safety measures.

4. At Majengo Primary School, during break time, Aisha was playing with others and suddenly slippered on ripe banana peels and fall down. Her teacher provided the first Aid to Aisha. Then took her to the Hospital. The doctor revealed that Aisha got Muscle sprain

  1. What is a muscle sprain
  2. Muscle sprain in among common accidents at home and school.
  3. Mention other five common accidents at home and at school.
  4. Mention four ways of preventing accidents at home and school.

5. Daudi married Lucy ten (10) years ago but not yet blessed to have a baby. They decided to go to the hospital for advice. After doctors check-up he discovered that there was a problem in their reproductive health. The doctor adviced the couples to do test tube babies and also Lucy adviced to use fertility drug.

  1. How do test tube babies done
  2. What may be is the problem of Lucy till the doctor advice them to practice test tube babies
  3. What is fertility drug
  4. What may be the reason of doctor’s advice Lucy to use fertility drug

6. (a)As a form four student who has a knowledge on Movement. Educate the form one students on the functions of the following component of the skeleton

  1. Skull
  2. Ribs
  3. Vertebral column
  4. Pelvic girdle

(b)State two types of skeleton

7. (a) When Asha was cooking in the kitchen unfortunately she touched a burning piece of charcoal and quickly, she withdrew her finger from it. Briefly describe how is this action of withdrawing the finger occurred.

(b)Tabulate three (3) differences simple Reflex Action and conditioned Reflex Action.

8. A student at Mafinga High school prepared the following experimental set up to investigate a certain phenomenon.

(a) What was the name of a phenomenon. Investigated in figures above?

(b) What was the purpose of experiment

(c) State the role of a solution of pyrogallic acid and sodium hydroxide

(d) What was the purpose of experimental se-up in flask B of experiment

(e) Predict the experimental results and interpret what happened in experiment

9. In form two class, during biology period, teacher Mkude provided bean leaf to each student. He asked students to observe external structures.

  1. What are four possible observable structures?
  2. Give function possible observable structures the students can observe externally
  3. Draw the leaf and label the structure they observed

10. (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.

11. If Dina is 70kg and 150cm tall

(a) What is her BMI (Body Mass Index)

(b) What are nutritional disorders was likely to get due to her BMI

(c) What advice you can advice Dina, so as to correct the problem you mentioned in 10(b) above

12. (a)With example briefly explain how comparative embryology supports the idea of organic evolution.

(b)Outline two Merits and demerits of Lamarck’s theory of evolution

SECTION C: (25 Marks)

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

13. Write an essay on AIDS using the following guidelines

  1. Cause of the disease
  2. Where the causative organism can be found in infected people
  3. Two ways by which the disease is transmitted
  4. Three symptoms of disease
  5. Three, ways of preventing the disease from infecting people
  6. Two ways of caring for people living with HIV/AIDS

14. Virus is one of the organism which are not classified in any of the kingdoms among ling things

  1. Why virus is not classified among Kingdoms of living organisms
  2. What is virology
  3. Discuss three(3) advantages of virus
  4. Discuss two(2) disadvantages of virus
  5. List four (4) viral diseases.

15. In an experiment, a variety of garden peas having a smooth seed coat was crossed with a variety having a wrinkled seed coat. All the seeds obtained in F1 had a smooth seed coat. The F1 generation was selfed. The total number in F2 generation was 6240, Let the gene for smooth seed coat be S.

(a) Work out the genotypes for the F1

(b) Work out the following for the F2

  1. Genotypes
  2. Phenotypes
  3. Genotypic
  4. Phenotypic ratio
  5. Total number of smooth seeds
  6. Total number of winkled seeds

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-60 YEAR-2022

THE UNITED REPUBLIC OF TANZANIA PRESIDENT’S OFFICE

REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT 

LUDEWA DISTRICT COUNCIL 

FORM FOUR MOCK EXAMINATION 2022   

 033/1 BIOLOGY 1

(For Both School and Private Candidates) 

Time 3 Hours 9th JUNE 2022 

Instructions

1. This paper consists of section A, B and C with a total of fifteen (15) questions

2. Answer all questions in sections A and B and TWO questions from section C in which question 13 is compulsory.

3. Except for diagrams that must drawn in pencils all writings should be in blue ink.

4. Calculator and cellular phones and any other unauthorized materials are not allowed in the examination room.

5. Write your examination number on every page of your answer sheet.

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 sheet provided.

i. Mwanaidi wanted to get powder from a piece of cassava so that she could carry out food test experiment in biology laboratory to know the food nutrient(s) present in cassava. Which of the following apparatus could she use to obtain powder from piece of cassava?

  1. Pestle 
  2. Grinder 
  3. Motor
  4. Motor and pipette  
  5. Pestle and motor 

ii. Maize plants of Kilimani primary school farm have yellow leaves and leaves fall without withering. What mineral element should be added in the soil of school farm to improve the qualities and yields of maize?

  1. Magnesium
  2. Copper
  3. Zinc
  4. Iron 
  5. Calcium 

iii. 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 the plant picked by Adam belongs?

  1. Dicotyledonae
  2. Angiospermophyta  
  3. Coniferophyta
  4. Monocotyledonae 
  5. Pteridophyta 

iv. Lijuakali started salivating as he saw a plate of cooked rice with roasted pieces of pork meat in the restaurant when he was on the way from school to home. What part of the brain is concerned with Lijuakali salivation?

  1. Cerebellum 
  2. Central hemisphere 
  3. Medulla oblongata
  4. Hypothalamus  
  5. Hind brain 

v. Mr. and Mrs. Chausiku, happened to have four children in their marriage. One of them is an albino. What is the possible genotype of Mr. and Mrs. Chausiku?

  1. AA x aa 
  2. Aa x Aa 
  3. AA x Aa
  4. Aa x aa
  5. Aa x aa 

vi. During the biology class session a biology teacher explained to his students about a theory of origin of life which state that “the universe has always existed and has no origin, that is, it did not have a moment of creation thus life has no origin.” Which of the following is the correct name of this theory

  1. The steady state theory 
  2. Special creation theory 
  3. Organic evolution theory
  4. Cosmozoan theory  
  5. Spontaneous generation theory 

vii. Most of students have failed to make a clear distinction between members of class arachnida from those of class insecta when they were classifying different living organisms in biology laboratory. As the expert of biology what is the characteristic which distinguish this two group of phylum arthropoda?

  1. The insects have three body parts while arachnids have four body parts
  2. The insects have one pair of antennae while arachnids have two pair of antennae
  3. Insects have six pair of walking legs while arachnids have three pair of walking legs
  4. Insects are carnivorous while arachnids are herbivorous
  5. Insects carry out gaseous exchange through tracheoles system while arachnids carry out gaseous exchange through book lungs

viii. Biology teacher advised students to use dry mass method when they are estimating the growth of different plants. Why the biology teacher advised students to use this method compared to other methods that can be used?

  1. Dead organisms are easier to work 
  2. Dry plants are lighter to measure 
  3. It exempts the variations due to with water content 
  4. It measure even irregular organism
  5. It is simple that other methods

ix. The menstrual cycle is marked by the flow of blood from the uterus after a period of time and it is regulated by hormones produced inside the women body. Calculate the date of ovulation in a menstrual cycle of 28 days if menstruation occurs on day 9th to 13th of a month

  1. 18th 
  2. 20th 
  3. 28th
  4. 22nd
  5. 19th

x. Form two students were observing the structures of animal cells by electron microscope in the biology laboratory. Unfortunately the image formed from their microscopes was not clear. Which of the following part of microscope will they use to adjust in order to obtain a sharp images of animal cells?

  1. Rotating nose piece
  2. Coarse adjustment knob 
  3. Fine adjustment knob
  4. Eyepiece lens 
  5. Mirror 

2. Match the items in List A with the responses in List B by writing the letter of the correct responses in List B besides the item number in the answer booklet provided

LIST A

LIST B

i. Humerus 

ii. Clavicles

iii. Radius and ulna 

iv. Femur

v. Tibia and fibula

  1. A flat triangular sharped bone overlying a number of the anterior ribs
  2. Bony framework of the head
  3. Has atlas and axis for articulation with the head
  4. Is the long bone found in the thigh between the hip and the knee
  5. Are the collar bones
  6. Has rounded head articulates with the glenoid cavity of the scapula forming ball and socket joints
  7. Have sigmoid notch for articulation with humerus
  8. These are the skeleton of the lower hind limb, these bones at the lower part articulate with tarsal bones

SECTION B: (60 marks).

Answer all questions in this section

3. A laboratory technician of Mavanga secondary school he arranged the apparatus listed below on the laboratory working benches in order for his students of form four class to conduct a food experiment. Assume you are the one that you are going to use these apparatus during food test experiment. Explain briefly how you will use them correctly

  1. Test tube
  2. Spatula
  3. Beaker 
  4. Test tube rack
  5. Dropper
  6. Bunsen burner

4. 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

5. Juma was narrating a story in a class about a person who has unbelievable strength when subjected in an extremely dangerously situation. How might person narrated by Juma be able to get such strength within a short period of time? Explain six poi

6. Maria and Mussa wanted to grow bread moulds. Maria put a moist piece of bread on a cupboard. Mussa put a dry piece of bread on the different cupboard. After three days Maria found greyish substances on the surface of that piece of bread she put on her cupboard, Mussa did not.

i. Explain Mussa and Maria observations.

ii. Draw a well labelled diagram of the substance observed by Maria on a cupboard after three days.

7. Animals have different hormones which perform different functions in their bodies this is like plants which have different hormones performing different functions. This hormones present in plants regulate plant growth and development .As a biologist explain four types of hormones responsible for regulations of plant growth

8. Suppose you are teaching biology at a certain school in Ludewa district. During a biology class session in form three, one form student asked you a question which state that “why plants do not need an elaborated excretory system similar to that of animals such as human being?” respond the question by explaining briefly six points.

9. 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.

10. A woman of blood group A claims that a man of blood group AB is a father of her child. A laboratory blood group test reveals that the child’s blood group is O. As the biologist answer the following questions by using punnet square.

i. Is it possible that the woman’s claim is correct? Prove

ii. What could be if the father blood group is group B? Explain your reasoning

11. a) Form two students of Mlimani secondary school were discussing about biology concerning a topic known as balance of nature. During their discussion they come across with three new terminologies which are unknown to them. Help them by giving a clear explanations about these terminologies. i. Autecology

ii. Ecological niche

iii. Synecology

b) Form four students of Liganga secondary school had a study tour to Manyara National Park. During their visit they observed the following organisms:vulture, antelope, shrubs, cheetah and wildebeest. As a form four student, draw a diagram that represents the food web and two food chains from these organisms

12. a) The malaria parasite has resisted in the recent past most of malaria drugs. Bacteria and pests have also resisted antibiotics and pesticides respectively. Explain the biological basis for this behavior

b) Most of students have failed to make a clear distinction of two terminologies which are analogous structures and homologous structures as they are used in biology. As the expert of biology make a clear distinction of these two terminologies, include examples in each case.

SECTION C: (25 Marks)

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

13. Nowadays most women are using artificial methods to prevent pregnancies intentionally without considering the negative impacts of these methods. Assume you are the health officer of Mtakuja village prepare a report that explain in details about the negative impacts of these methods of family planning. (four points)

14. A middle-aged man is regularly visiting the local traditional healer, suspecting that he has been bewitched by a certain old man in the village. He has a prolonged cough and is emitting blood-stained sputum whenever he coughs. He has not eat properly because he has poor appetite and suffers from weight loss. Also he is surprised that he sweats during the night.

a) What would you advice the man to do and which disease is he likely to be suffering from?

b) Briefly explain the cause and how the disease is transmitted from one person to another person

c) Explain three four methods that you are going to use so as to prevent and control the disease.

15. Form two students of a certain school were interested to know the application of anaerobic respiration in their daily life. Assume you are a biology teacher; explain to these students the application of anaerobic respiration in their daily life( four points)

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-40 YEAR-2022

PRESIDENT'S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

KILIMANJARO REGIONAL COMMISSIONER'S OFFICE

FORM FOUR MOCK EXAMINATION

BIOLOGY CODE: 033/1

TIME 3:00 HOURS 30/06/2022


INSTRUCTIONS

l. This paper consists of section A, B and C

2. Answer all question in section A and B and two (02) questions from section C of which question number 13 is compulsory

3. Read each question carefully before start answering it

4. Except for drawing that must be in pencil, all writing should be done using a blue or black pen.

5. Write your examination number one very page of your answer booklet (s)

SECTION A

Answer ALL questions in this section

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

i Why it is advised to build an incinerator in every hospital and health center

  1. For collecting waste
  2. For disposing gaseous waste
  3. For disposing liquid waste
  4. For burning hazardous waste
  5. For disposing plastic waste

ii. Jumanne stayed for long time without suffering from any disease what gives his body ability to resist against it

  1. Vaccination
  2. Inovulation
  3. Vaccine
  4. Immunity
  5. Medication

iii. When students were conducting private study at night, light went off suddenly. Which of the following changes occurred in the eyes of the students?

  1. The lens become thicker
  2. The pupil become relaxed
  3. The ciliary muscles relaxed
  4. The eye pupil opened wider
  5. The pupil contracted

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

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

v. Form Il students argue about waste products. As a form IV student who learnt excretion in form Ill which of the following is not waste product in man?

  1. Sweat
  2. Urine
  3. Carbondioxide
  4. Feaces
  5. Urea

vi. A person who admitted in the hospital after an operation will mostly likely be fed on food rich in

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

vii. The offspring's resulted from the cross between red flowered and white flowered plants were always found to be pink. This is an example of; -

  1. Incomplete dominance
  2. Codominance
  3. Crossing over
  4. Mutation
  5. Natural selection

viii. Rising in body temperature in the human body is corrected mainly by

  1. Dilating the skin arteries and sweating
  2. Constricting the skin arteries and shivering
  3. Dilating the skin veins and shivering
  4. Constricting the skin veins and shivering
  5. Dilating of arteries and shivering

ix. The development of unfertilized ovary of a plant into a fruit is called

  1. Parthenogenesis
  2. Parthernocapy
  3. Ovovivi parity
  4. Oogenesis
  5. Ovulation.

x. The interaction between two species in which both organism benefit is known as,

  1. Commensalism
  2. Endo parasite
  3. Mutualism
  4. Parasitism
  5. Ectoparasite



2. Match the description of the part of urinary system in list A with their correspondence terminologies in list B by writing the correct letter beside the item number in the answer booklet provided

LIST A

LIST B

  1. Renal vein
  2. Renal artery
  3. Urethra
  4. Ureter
  5. Urinary bladder


  1. Tube that carry urine from kidney to the bladder
  2. Tube that carry urine from the bladder to the outside of the body
  3. Stores the urine temporary
  4. Collect the urine from all the collecting duct
  5. Take blood away from the kidney
  6. Bring blood containing waste
  7. Carry blood toward the kidney
  8. Functional unit of kidney

SECTION B (60 marks)

Answer all question in this section

3. Asha accidentally fall in the class and was found that she was not breathing, the student helped her to recover breathing

a. What is the name of process done by the students?

b. What are the qualities of the students who gave the process (Give two qualities)

c. What were the reasons of giving the above process/ Give ay three reasons

4. Draw a structure of rabbit cell and label the parts used for

a. Controlling all activities of the cell

b. Control movement of materials

c. Provide medium of the chemical reaction

5. Form three (Ill) Students from Mahorasha Secondary School visited at Serengeti National Park and the following organism were observed;- Hyena, Shrubs, Grasses', elephant, Lion, bacteria and Zebra

a. Construct a food web that accommodates all organisms

b. Outline any two (2) food chains from above constructed food web in 5 (a) above

c. What will happen in an ecosystem if all shrubs and grasses are deplenished

6. (a) Why is it recommended to greet the elders, help the elders not talking while eating and avoiding abusive language? (three reasons)

(b) How will you maintain the proper person hygiene during puberty (three reasons)

7. Mr Jose is a bachelor boy he always does not wash his plates after meal. One day he observed blackish substance on the plate which was lifted with food remains for three days

i. Give the name of that blackish substance

ii. State the kingdom and division/phylum to which that substance belongs

iii. State four characteristics/features of organisms that cause blackish substance

8. How does the skin of the man regulate internal body temperature when the external environment is over heated? Briefly explain by giving three ways

9. (a) Give the name of the muscles which are found above and below the humerus

(b) Explain what will happen when

i) The arm is bending ii) The arm is straight

10. (a) Briefly explain how water air and temperature facilitate seed germination

(b) Differentiate between hypogeal and epigeal germination (Three differences)

11. (a) Explain four features of respiratory surface

(b) Name the structure used for movement in the following organism

i) Amoeba

ii) Paramecium

iii) Mammals

iv) Fish

12. Mwakajoka planted pea plants in his garden. In Fl generation all pea plants were found to be tall on selfing 1000 pea plants were obtained

a. Work out to determine the genotype of F2 generation

b. How many pea plants were?

i. Homozygous tall

ii. Heterozygous tall

iii. Homozygous short

SECTION C (25 MARKS)

Answer two (2) question from this section question number 13 is compulsory

13. Why are mother's advice breast feed their babies instead of using bottle feeding or cup feeding from powder or liquid milk? (six point)

14. Dotto and Kulwa believed that livings thing does not change with the course of time. As a biologist convinces them by briefly explain the evidence of organic evolution. Give four points

15. Growth and development of an organism particularly human being is-affected by a number of factors due to his or her own life style and environment. Based on this statement explain any six factors that affect human growth and development.

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-20 YEAR-2022

THE UNITED REPUBLIC OF TANZANIA PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

MWANZA CITY JOINT EXAMINATION (NYEGEZI, BUTIMBA AND MKUYUNI WARDS)

FORM FOUR PRE - MOCK EXAMINATION-2021

033/1 BIOLOGY 1  

Time: 3 HOURS MAY ,2021

Instructions

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

SECTION A (15 Marks

Answer all questions in this section.

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

(i) Viruses are considered to be non-living because:

  1. They are only active in the contents of a living cell 
  2. They have true nuclei
  3. The body is covered by cell wall
  4. They are single cell Eukaryotic Organism 
  5. They have cell wall made up of cellulose.

(ii) Select the items that indicates the best Match in the vitamin –deficiency 

  1. Vitamin A ………dry scalyskin
  2. Vitamin B............. loss of appetite and yawning
  3. Vitamin C............. anaemia and high blood pressure
  4. Vitamin D............. soft deformed bones
  5. Vitamin E............. poor night vision

(iii) Which of the following is a chemical substance that catches fire easily?

  1. Corrosive
  2. Flammable
  3. Oxidant
  4. Irritant
  5. Harmful

(iv) When students were conducting private study at right, lights went off suddenly. Which of the following changes occurred in the eyes of the students?

  1. The lens become thicker 
  2. The pupils become large
  3. The ciliary muscle relaxed 
  4. The lids closed
  5. The eyes opened wider

(v) 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

(vi) Which of the following is formed immediately after fertilization?

  1. A placenta
  2. An embryo
  3. A foetus
  4. Amniotic fluid
  5. A zygote

(vii) A type of germination where by the Cotyledons is raised above the ground is called

  1. Epigeal
  2. Hypogeal
  3. Hypocotyls
  4. Tap root
  5. Epicotyls

(viii) The offspring produced by mating the F1generation is known as

  1. Fgeneration 
  2. Fproducts 
  3. Fproducts 
  4. New generation 
  5. Genetic generation

(ix) Which food substance can be tested by using Iodinesolution? 

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

(x) People with blood group............. are called universal recipients

  1. AB
  2. B
  3. O
  4. A
  5. None of the above

2. Match the phrases in List A with the corresponding responses in List B, by writing the letter of the correct alternative in List B on the answer sheet provided.

LIST A

LIST B

(i) Bi concave in shape, lack a nucleus

(ii) Have irregular shape which respond to infections

(iii) Fragments of cells produced in the bone marrow

(iv) A fluid tissue consisting of white cells, red cells, platelets and plasma.

(v) The fluid part of the blood.

  1. Leucocytes
  2. Erythrocytes
  3. Thrombocytes
  4. Thrombin
  5. Phagocytes
  6. Plasma
  7. Capillaries
  8. Blood

SECTION B (60 Marks)

Answer all questions in this section.

3. (a) Define the following terms as used in biology.

(i) Biology laboratory (ii) Botany

(b) Give the function of the following parts of light microscope (One function in each).

  1. Mirror
  2. objective lens
  3. Eye piece
  4. Base
  5. Limb or Arm
  6. Clip
  7. Course adjustment
  8. Stage

4. (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.

5. (a) Differentiate between a zygote and a sperm

(b) Name the hormone in human body which

  1. Secreted during birth to initiate labour 
  2. Stimulate milk production
  3. Re absorption of water in the kidney 
  4. Sodium absorption in the kidney.

6. (a) Differentiate between epigeal and hypogeal germination

(b) Mention condition necessary for seed germination

(c) Describe changes occurs during seed germination

7. (a) What do you know by the following terms

  1. Genetics
  2. Albinism
  3. Complete dominance
  4. Mutation

(b) Mr and Mrs Msakanjia happen to have four children in their marriage, one of them is albino, use the genetic diagram to prove the statement above.

8. (a) Give the function of

  1. Red blood cell
  2. White blood cells

(b) Outline six roles played by the blood in Human beings.

9. (a) Explain the term Osmoregulation

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

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

  1. On the cornea 
  2. On the Hand 
  3. In the bronchus
  4. In the stomach

(b) Explain why it is

(i) Not health to sleep in a closed room with many potted plants

(ii) Dangerous to sleep in a poorly ventilated room with a charcoal burner on.

11. (a) Write short notes on the following terms; food chain and food web.

(b) Construct sensible food web from the given organisms, Grass, Grass hopper, Rabbit, Toad, Snake, and Vulture

12. (a) Differentiate between Sexual reproduction and Asexual reproduction

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

  1. STD’s
  2. HIV infection

SECTION C (25 Marks)

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

13. During the rainy season the common problem of eruption of diseases become more serious. Cholera has been a long-term problem in Tanzania. The government tried to eradicate the disease but has not been very successful

(a) Explain the possible reasons that have led to the failure of problem of cholera

(b) Explain how this disease can be eradicated successfully in terms of its mode of Transmissions, control, and curative methods.

14. 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.

15. With the aid of well labeled diagram explain clearly how the gaseous exchange occurs across alveolus

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-61 YEAR-2021

Candidate's Name. . . . . . . . . . . . . . . . . . . .

PRESIDENT'S OFFICE REGIONAL ADMINISTRATION AND LOCAL. GOVERNMENT

ARUSHA REGION MOCK EXAMINATION - MAY 2021

FORM FOUR

033 BIOLOGY

TIME: 3:00HRS

INSTRUCTIONS

  • This paper consists of sections A,B and C with a total of fifteen (15) questions.
  • Answer all questions in section A and B and two (2) questions from section C of which question 13 is compulsory.
  • All writing should be in blue or black ink, except for diagrams that must be drawn in pencil.
  • Cellular phones and any unauthorized materials are not allowed in the examination room.
  • 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 among the giver alternatives and write its letter beside the item number in the answer booklet provided.

(i) Which one of the following represents the third stage of planning a scientific study

  1. Formulate a hypothesis 
  2. Identify the problem 
  3. Carryout the experiment
  4. Make observation
  5. Conclusion 

(ii) A heart is an example of

  1. an organ 
  2. a tissue 
  3. a system 
  4. an organelle 
  5. Trypanosome

(iii) Which one. of the following is a vector of malaria.

  1. Plasmodium
  2. Mosquito
  3. Housefly
  4. Trypanosome
  5. Tsetse fly

(iv) The main end product of photosynthesis is transported -away from the leaves by the

  1. Xylem 
  2. Veins 
  3. Phloern
  4. Vascular bundles 
  5. Lateral buds

(v) Below are some of diets taken in most of developing countries, them could easily cause Kwashiorkor in children?

  1. Millet with fish
  2. Cassava with beans
  3. Rice with Meat
  4. Maize with wheat
  5. Fish with banana

(vi) The body of a mother watching her child falling from the dining table will most probably secrete one of the following chemical substances

  1. Thyxone 
  2. Adrenalin
  3. Glucoline
  4. Insulin 
  5. Glucagon ) 

(vii) Man eats green vegetables, meat and fruits of some plants. The man is best described as

  1. Omnivore 
  2. Herbivore 
  3. Carnivore
  4. Heterotroph 
  5. Autrotroph

(viii) The heart, liver, brain, lungs and kidney of humans do not grow at the same rate, What is this type of growth called

  1. Unlimited growth
  2. Human growth
  3. Limited growth
  4. Algometric growth
  5. Isometric growth )

(ix) Genotype of an organism describes the

  1. Physical appearance
  2. Genetic constitution
  3. Interaction
  4. Genes with the environment
  5. effects of the environment

(x) A woman. gives birth and produces twins, a boy and girl because;

  1. One egg was fertilized and then divided into two
  2. The uterus was large enough for two embryos to develop
  3. Her ovaries produced two eggs which were both fertilized
  4. Twins were produced in her family
  5. Identical twins were produced (

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

LIST A LIST B
  1. Remains of ancient organisms 
  2. Supernatural power created all living things 
  3. life originate from no-living matter 
  4. The universe has always existed. 
  5. Life on earth originated from elsewhere
  1. Lamarkism 
  2. Cosmozoan theory 
  3. Steady state theory 
  4. Chemical theory 
  5. Spontaneous generation 
  6. Fossils 
  7. Special creation 
  8. Darwinism 
  9. Strata 

SECTION B

3. In the biology laboratory there are different apparatus and equipment used for conducting experiment Name the apparatus used for:-

  1. Catching small insects
  2. Magnifying microorganism
  3. Determining temperature of liquids
  4. Measure mass of substances
  5. washing test tube
  6. Holding and heating small sample of liquid.

4. Mr. Ngedere picked a plant which had the following characteristics fibrous rout system, Non-woody stem, vascular bundles without cambium and flowers contained six petals and six sepals

  1. Name the division and class to which the plant belong
  2. State four characteristics of the division to which the plant belongs.

5. Use a flow diagram to describe the Neuron pathway of a reflex action.

6. In hot weather human tend to produce more sweat and smaller volume of darker coloured urine. In cold weather humans tend to produce more urine that is paler in colour. Use your knowledge of how the kidney functions to explain observation.

7. (a) (i) State the Mendel's first law of inheritance

(ii) lnterms of Nitrogenous bases present, differentiate between DNA and RNA

(b) A woman who has blood group A is married to a man of blood group B the first born is of blood group 0. The man claims that the child is not his. Can you settle the dispute using your knowledge of genetics? With aid of diagram, explain how you can arrive to your answer.

8. (a) Mr. Ngoma is a farmer he made a survey to the farm where Maize was planted and observed that all seeds, have germinated. List the environmental conditions that are necessary for germination to take place on his farm.

(b) Explain why the factors listed are necessary.

9. (a) Shalon is always suffering from Sudden, involuntary and painful contractions of single muscles or a group of muscles when attempt to strenuous exercise. What is a name of condition suffered from? 

(b ) Give two(2) causes of the condition named above (9a)

(c)Give two ways you can advise shalon how to avoid this problem.

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

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

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

11. (a) How aerobic respiration differ from anaerobic respiration Give four points.

(b) List four properties of respiratory surface

12. (a) Write the meaning of the following terms (i) Ovulation (ii) Fertilization (iii) Zygote (iv) Embryo (v) Foetus

(b) Draw a well structure of female reproductive system and label the parts where dogenesis take place, site for implantation and site for fertilization.

SECTION C (25 Marks) -

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

13. A group of students had a study visit to Mount Meru hospital at Arusha. They noted a patient with running nose, dry cough, fever, loss of taste, sore threat, headache and difficult. breathing.

  1. What could be the possible disease that the patient was suffering from.
  2. Briefly explain the causes and three (3) ways of transmission of the disease.
  3. Explain four (4) controls/preventive measures of the disease mentioned in (i) above.
  4. How the disease can be treated/cured

14. (a) Explain four (4) factors affecting growth in human

(b) (i) Name three (3) methods that you can use in the laboratory to measure growth of organisms.

(ii) Give (2) processes that take place in body cells to bring about growth

15. In an experiment, genets crossbreed yellow maize with white maize. The ratio of yellow to white in the F2 generation was 3: 1

(a) (i) Which of the two characters do you think was dominant

  1. What is the colour of the maize in the F1 generation
  2. Show the percentage of pure yellow in the F2 generation

(b) For the time a man has reared animals and grown crops. Give four (4) phenotypic features have been selected for modern agricultural purposes.

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-34 YEAR-2021

THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATION COUNCIL OF TANZANIA FORM IV MOCK EXAMINATION 2020 DODOMA REGION 133/1 BIOLOGY 1

Time: 3 HOURS Tuesday, 4 August 2020 a.m.

Instructions

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

SECTION A (15 Marks)

Answer all questions in this section

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

(i) Which of the following is the most important difference between plants and animals?

  1. Growth
  2. Movement
  3. Nutrition
  4. Sensitivity
  5. Development

(ii) The following are the branches of biology. Identify one which is not

  1. Microbiology
  2. Ecology
  3. Genetics
  4. Science
  5. Mycology

(iii) Which of the following specialized cells in plant is responsible for the high concentration of chloroplast responsible for photosynthesis?

  1. Chlorophyll
  2. Palisade
  3. Guard cell
  4. Root hair cells
  5. Xylems

(iv) The following are examples of water borne diseases:

  1. Malaria and Bilharzias
  2. Diarrhea and malaria
  3. Yellow fever and Typhoid
  4. Cholera and Typhoid
  5. Malaria and Typhoid

(v) Mutual interaction between two species is described by which of the following statement?

  1. Both lives as parasite
  2. Both benefit and flourish
  3. One harmed and the other benefit
  4. Both neither benefit nor harmed
  5. Non –of the above is correct

(vi) A very young tadpole breath by means of

  1. Spiracle
  2. Gills
  3. Segments
  4. Nostril
  5. Skin

(vii) Salome gets an accident and found that she could hardly maintain her body equilibrium. Which one among the following structures of her body was probably damaged?

  1. Cochlea
  2. Medullar Oblongata
  3. Semi secular canal
  4. pituitary canal
  5. Auditorium canal

(viii) Pancreases secrete pancreatic juice which contain the following enzymes

  1. Bile, Lipase and Trypsin
  2. Trypsin, Bile and Amylase
  3. Amylase, Trypsin and mucus
  4. Renin, Trypsin and amylase
  5. Trypsin, mucin and lipase

(ix) -------- is the force responsible for pulling of water to the top of the tall trees

  1. Capillarity pull
  2. Transpiration pull
  3. Osmotic pressure
  4. Turgor pressure
  5. Mass flow rate

(x) -------- and --------- grows into shoot and root respectively during seed germination

  1. Plumule and Epicotyl
  2. Plumule and radicle
  3. Radicle and Plumule
  4. Seed and Hilum
  5. Epicotyl and plumule

2. Match the responses in List A with responses in List B by writing the letters of the correct response beside the item number in the answer booklet provided.

LIST A

LIST B

(i) Maintenance of constant internal environment

(ii) Deamination of Amino Acid

(iii) Blood capillaries within Bowman’s capsule

(iv) Sugar in urine

(v) Functional unit of a kidney

  1. Diabetes mellitus
  2. Nephron
  3. Kidney
  4. Glomerulus
  5. Liver
  6. Diabetes inspindus
  7. Regulation
  8. Homeostasis
  9. Urination
  10. Excretion

SECTION B (60 Marks)

Answer all questions in this section

3 (a) Name the locomotory organs of the following organisms

  1. Amoeba
  2. Euglena
  3. Man
  4. Earthworm

(b) Differentiate between movements and locomotion.

4 (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.

5 (a) Give four forms and shapes of bacteria

(b) Outline four economic importance of useful bacteria.

6. (a) Briefly explain the meaning of the following biological terms

  1. Seed germination
  2. Epigeal germination
  3. Meristerms
  4. Primary growth in plants

(b) State four significances of water during seed germination.

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

  1. on the cornea
  2. on the Hand
  3. on the bronchus
  4. in the stomach

(b) Explain why it is

(i) Not health to sleep in a closed room with many potted plants

(ii) Dangerous to sleep in a poorly ventilated room with a charcoal burner on.

8. (a) Write short explanation of the following terms

(i) Excretion (ii) Neurone

(b ) Animal brain has different part with different functions, discuss the function of the following parts

  1. Motor neurons
  2. Relay neurons
  3. Sensory neurons
  4. Medulla oblongata

9. (a) Explain the meaning of the following terms in relation to coordination

(i) Reflex action

(ii) Reflex arc

(b) Distinguish between simple and Conditioned reflect action. Give four points.

10 (a) (i) Define Immunity

(ii) Distinguish between natural active immunity and artificially active immunity

(b)Name four diseases which children are immunized

11. (a) Explain the meaning of the following terms:

  1. Excretion
  2. Deamination
  3. Detoxification
  4. Secretion

(b) The following are the main excretory products in man carbon dioxide, excess water and Urea

(i) Name the major organs through which each is excreted

(ii) Name two substances that the body would be deficient following heavy sweating

12. (a) Elaborate any three traditional and three modern methods of food processing and preservation.

(b) Show clearly the importance of Breast- feeding in children (Give 3 points)

SECTION C, 3 QUESTIONS


13. (a) Briefly discuss the following theories of origin of life.

( i ) Special creation

( ii ) Chemical evolution theory

(b) Outline Lamack’s Theory of evolution and explain with specific examples why biologists dispute the theory today.

(c) Outline the main differences between Lamack’s and Darwin’s theories of evolution.

14. (a) What are the four major differences between Deoxyribonucleic acid (DNA) Ribonucleic Acid (RNA).

(b) A pure breeding pea plant with smooth seeds was crossed with pure breeding pea plant with wrinkled seeds

(i) Show the result of F1 and F2 on selfing F1 .

(ii) Work out the phenotypic and genotypic ratio of F2.

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

(a)Meaning of transportation

(b)The importance of transportation

(c )The adaptation of features which enable the plant to reduce water loss.

LEARNINGHUBTZ.CO.TZFORM FOUR BIOLOGY REGIONAL SERIES-2 YEAR-2020

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