Biology 1992 Waec Past Questions and Answers

Question 46 :

• WAEC 1992

The swarming especially at the beginning of the rainy season is a courtship behaviour shown by

A. Migratory birds
B. Pigeons
C. Crickets
D. Winged termites
E. Bees

Question 47 :

• WAEC 1992

Lamarck's evolution theory could be summarised by the statement that

A. Only the fittest can survive in a challenging environment
B. Species that are unable to adapt become extinct
C. New characteristics do not arise in organisms in time of need
D. The changing environment imposes structural physiological and behavioural changes in organisms
E. In a changing and unstable environment nature rejects the weak

Question 48 :

• WAEC 1992

The property of clay soil that prevents it from supporting thick vegetation is its

A. Possession of chemically weathered granite rocks
B. Inability to retain much water
C. Tendency of becoming waterlogged
D. Porosity and low water retention ability
E. High capillary spaces between the soil particles

Question 49 :

• WAEC 1992

(a) List the principal sense organs in mammals and their functions.
(b) (i) Describe the eye defect in which only distant objects are seen clearly.
(ii) How can it be corrected? Illustrate your answer with labelled diagrams.
(c) Make a large diagram of the vertical section through the mammalian skin.

Question 50 :

• WAEC 1992

(a) Describe briefly the female reproductive system of a named mammal. (A diagram is essential).
(b) List three differences between reproduction in mammals and in amphibians.
(c) Describe the structure and function of the male reproductive organ of a flowering plant.