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Biology Form Three Mid Year Exam Question Paper

Biology Form Three Mid Year Exam 

Course:Biology

Institution: Form 3 question papers

Exam Year:2012



1. Using a simple diagram differentiate between basal and parietal placentation

2. Give one difference between a fruit and a seed.

3. What is the effect of induced and maintained high levels of progesterone soon after menstruation on the female reproductive cycle

4. Name two ways that would course carbon iv oxide to increase in a habitat.

5. Name the cabohydrate that is found in the exoskeleton on insects.

6. Name the class in the phylum arthropoda that has the largest number of organisms.

7. Define dentition

8. State two types of dentition

9. Give two reasons why sunlight is necessary for photosynthesis

10. During which phase of meiosis does crossing over occur

11. What is the importance of crossing over in meiosis

12. Fruit formation without fertilization is called?

13. State two ways in which wind assists in reproduction in plants

14. In testing for non reducing sugars give a reason why the following are used
a. Dilute hydrochloride acid

b. Sodium hydrogen carbonate

15. Explain briefly how the surface area to volume ratio determine the complexity of transport system in animals.

16. List two features of small intestines that help to increase its surface area.

17. Name two aterials that are suspended in the nucleoplasm






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