Waec Biology Past Questions and Answers

Question 131:

• WAEC 1990

The process by which plants and animals are modified in structure, physiology and behaviour in order to survive is known as

A. Evolution
B. Adaptation
C. Succession
D. Aggregation
E. Hibernation

Question 132:

• WAEC 1990

What is the significance of the bee dance to other bees?

A. Warning signal
B. Presence of food
C. Mating signal by the male
D. Soaring the enemies away
E. Time for nuptial flight

Question 133:

• WAEC 1990

Which of the following statements is not associated with the theory of natural selection?

A. There is a struggle for existence
B. There is competition among the offsprings
C. The weaker offsprings are eliminated
D. Food and other needs are abundant
E. Nature selects those that survive to reproduce their kind

Question 134:

• WAEC 1990

(a) Describe briefly the process involved in the breakdown of glucose in the cell of living organisms to produce energy (AT P)
(b) State two conditions under which glycogen can be converted to glucose to produce energy.
(c) Describe an experiment to demonstrate that oxygen is released by green plants during photosynthesis.

Question 135:

• WAEC 1990

(a) (i) Give two reasons why termites are described as social insects.
(ii) Name four castes found in the termite nest, stating one of each castes.
(b) Describe five behavioural adaptations of termites which enable them to survive in their environment.