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Biology Form Two Question Paper

Biology Form Two

Course:Secondary Level

Exam Year:2011

KIERENI SECONDARY SCHOOL P.O BOX 419 CHUKA

END MAY 2011 EXAMINATIONS BIOLOGY FORM TWO

1. Give three diseases and defects of the circulatory system. (3mks)

2. Explain five functions of mammalian blood. (5mks)

3. List down three important functions of water in a plant. (3mks)

4. Distinguish between double and single circulation. (2mks)

5. Outline four differences between arteries and veins. (4mks)

6. Explain how the following plant adaptations minimize the rate of transpiration. (4mks)

a. Sunken stomata
b. Leaf folding

7. If the nerve supply to the head of a mammal is severed, the rhythmic heart movements will still go on and the heart continues to beat. Explain. (2mks)

8. State four environmental factors that affect the rate of transpiration. (4mks)

9. Give three functions of the stem. (3mks)

10. Explain why the xylem vessels are more efficient in the transportation of water than tracheids. (2mks)

11. State the functions of the following cell organelles: (2mks)
a. Lysosome
b. Ribosomes

12. State the functions of the following parts of a light microscope (3mks)
a. The condenser
b. The stage
c. The objective lens

13. Describe the role played by osmosis in living organisms. (3mks)

14. State the functions of the following (2mks)
a. Renal vein
b. Hepatic artery

15. Explain three forces involved in transportation of water and mineral salts in plant. (6mks)

Biology Form Two Question Paper

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