LEARNING HUB TANZANIA

BIOLOGY - TERMINAL EXAMINATION

FORM THREE

TIME: 3HRS                                                                                                        

NAME: __________________________________                        CLASS:___________

1. INSTRUCTIONS

i)                    This paper consists of three sections A,B and C

ii)                  Answer all questions in sections A and B, and one question in section C

iii)                Ensure clarity in your responses

iv)                Don’t attempt to cheat

1. Regulatory control of the body temperature thirsty and hunger occurs in the

1. Hypothalamus
2. Cerebrum
3. Thalamus
4. Pituitary

2. Hyposecretion of growth in childhood would result to….

1. Dwarfism
2. Gigantism
3. Death
4. Hyperactivity

3. A student was given a piece of material of doubtful origin; he wanted to know whether it is from an animal or from a plant. Which of the following should be analyze and examine?

1. The cytoplasm and cell membrane
2. The nucleus and outermost covering
3. The cytoplasm and outmost covering
4. The nucleus and cell membrane

4. Plasmolysis of red blood cells would occur if the cells were

1. In isotonic solution
2. In hypotonic solution
3. In hypertonic solution
4. Non of the above

5. The following are ascomycota except one identify it

1. Cup fungi
2. Penicillum
3. Yeast
4. Rhizopus stolonifer

6. The skin does all these except;

1. Regulate temperature
2. Produce blood cells
3. Store fat
4. Prevent you from ultra-violet rays

7. All are functions of saliva except;

1. Digestion of starch
2. Digestion of protein
3. Lubrication of food
4. Protection of bacteria

8. Which part constitutes an illuminating system?

1. Diaphragm
2. Mirror
3. Condenser
4. All of the above

9. Which of the following statements concerning diffusion and active transport is correct?

1. Both require energy
2. Neither requires energy
3. Only diffusion requires energy
4. Active transport requires energy while diffusion do not

10. On a cold day one usually experiences, shivering, this is the way of maintaining normal body temperature. Why does one feel better after shivering?

1. The muscles are coordinated
2. The body responds to stimulus
3. The body releases energy and heat
4. The body has better adaptations

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

SECTION B

Answer all questions in this section

All questions carry 8 marks except question five and six which carry 6 marks each.

3. a)State three actions which take place in the human body in response to each of the following   conditions:

i)                    When the temperature of the surrounding is low

ii)                  When the body temperature rises due to increase in surrounding temperature

b) Briefly explain why people took pale when they feel cold?

4. i) The diagram below represents a mammalian nephron

a)      What happens to sodium ions between sections 1 and 2?

b)      Explain the effect of the absence of the ant diuretic hormone to the functioning of section3

c)      What would happen if there is partial constriction at point 5?

d)      Explain the difference in structural adaptations of a desert animal such as kangaroo and a water fish such as tilapia nilotica.

ii) Study the diagram below and answer the question that follows

a)      Name the structures labeled A,C,E, and F

b)      State the function of structure labeled D

c)      If structure F was removed from the body of the mammal, what effect would this have?

5. a)Define the term photosynthesis

b) Give the importance of photosynthesis

c) List four differences between respiration and photosynthesis

d) State the site of photosynthesis in a plant cell

e) What role is played by light during photosynthesis?

6. a)Explain the functions of the vascular system in plants

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

7. The diagram given below represents a limb of a vertebrate

a)      Name the bones labeled A,B and C

b)      Name the parts D, and A

c)      State the functions of D, and E

d)      A patient was operated and doctors realized that the synovial fluid in the joints had reduced. Suggest a possible effect of this.

ii) The diagram below shows the behavior of red blood cells when placed in various solutions

a)      Name the process that takes place in C and F

b)      What types of solutions are A,B and C

c)      If a plant cell were placed in a beaker containing solutions A, what observations are likely to be made?

d)      Which of the solution is likely to be found in a blood plasma?

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

b) i) Name the digestive juice which is produced by the liver

    ii) State the function of the substances contained in the digestive juice named in b (i)

9. a)Differentiate the following terms:

i)                    Breathing and respiration

ii)                  Inhalation and exhalation

b) Briefly describe the following phenomenon:

i)                    A person breathes more when is running fast

ii)                  The ribs move outwards and upwards while the diaphragm flattened when air enters the lungs

SECTION C (20 MARKS)

Answer one (1) question from this section

10. Explain any four effect of irresponsible sexual behavior and suggest five ways of eradicating those behaviors in the community.

11. Describe how malaria parasites are transmitted, the sign developed to the host and give four ways which can help in combating malaria in the country.
12. Explain two differences between artificial and natural classification systems and indicate the two merits and demerits for each system.

LEARNINGHUBTZ.CO.TZFORM THREE BIOLOGY MODAL SERIES 14