Biology Past Questions and Answers

Which of the following is not included in the theory of natural selection?

The theory of evolution by natural selection was first put forward by

(a) What is a habitat?
(b) Describe the energy flow in a freshwater habitat.
(c) List (i) three biotic factors; (ii) five abiotic factors which affect plants in freshwater habitat.

(a)(i) What is a joint?
(ii) List three types of movable joints and mention one location in the mammalian body of each type.
(b)(i) Make a labelled diagram, 8-10cm long, of a typical movable joint.
(iii) Explain how the structure of the joint adapts it to its function.

(a) Distinguish between pollination and fertilization in plants.
(b)(i) State five features which ensure cross pollination in plants.
(ii) Name one plant example for each feature
(c)(i) Name three agents of pollination
(ii) State three features of wind-dispersed fruits/seeds.