Biology Past Questions and Answers

(i) Make a labelled drawing of a typical plant cell to show its essential features.
(ii) Give the functions of two labelled organelles
(b) Describe briefly two levels of cell organization in living organisms giving an example of each type.
(c) What role do the following processes play in the activities of a living cell (i) osmosis; (ii) diffusion.

(a) State four modes of nutrition in plants.
(b) Outline the process involved in the light and dark reactions of photosynthesis.
(c) Describe briefly the modifications and the mechanisms associated with the following feeding habits:
(i) filter feeding in mosquito larva; (ii) parasitic feeding in tapeworm.

(a) (i) Define the term population. (ii) List two biotic and abiotic factors each that affect population growth.
(b) What are the effects of food shortage on a population?
(c) Describe two methods each for:
(i) improving crop yield (ii) preserving and storing food. Explain the principle involved in each of the methods described.

Which of the following levels of organisation in living things is in the correct sequence, starting from the
most complex to me simplest?

Which of the following levels of organisation in living things is in the correct sequence, starting from the
most complex to me simplest?