BIOLOGY 4

BIOLOGY TRIAL QUESTIONS

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1.
a. What is artificial vegetative propagation?
b. Describe layering as a method of vegetative propagation illustrated with a suitable diagram.
c.
i. State two (2) advantage of a sexual reproduction.
ii. Name three (3) types of a sexual reproduction found in micro-organisms and give one (1) example of each type.

2.
a. Explain the following terms;
i. Digestion
ii. Peristalsis
iii. Transpiration
b. In a tabular form list five (5) differences between photosynthesis and transpiration.
c. Make a drawing 8-10cm long of the longitudinal section of a villus and label fully.

3. Explain the following;
a. Independent Assortment
b. Linkage
c. Sex-Linked Character
d. Sickle-Cell Anemia

4.
a. What is variation?
b. Name two (2) types of variation and give two (2) examples of each.
c. Explain the following;
i. Chromosomes
ii. Mutation
d. State three (3) types of mutation.

5.
a. Make a drawing 8-10cm long of paramecium.respirationhe levels of organization of the following organisms and structure;
i. Human skeleton
ii. Plasmodium
iii. Blood
iv. Hibiscus flower
c. Describe briefly the following processes in a toad;
i. Cutaneous respiration
ii. Buccal respiration

6.
a. Explain how the human liver function as;
i. A homeostatic organ
ii. An excretory organ
b. Describe how the dentition of herbivorous animals is adapted to its food.
c. Distinguish between red blood cell and white blood cell..

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