Biology 1990 Waec Past Questions and Answers

Question 56 :

• WAEC 1990

The precondition for transfusion of blood to an accident victim is

A. Seeking the consent to his parents
B. Ascertaining the religious belief of the victim
C. Cross-matching the blood group of the donor with that of the accident victim
D. Curing the donor of any disease traced in his blood
E. Rewarding the donor with food and money.

Question 57 :

• WAEC 1990

Adaptive radiation as illustrated by the variety of forms in insects can be regarded as

A. Behavioral modification
B. A case of rapid population growth
C. A physiological process
D. An evidence of evolution
E. A population control mechanism

Question 58 :

• WAEC 1990

Which of the following statements about the modifications of pentadactyl fore-limb is not correct?

A. Wings are modified for flying in birds
B. Flippers are modified for grasping in sharks
C. Legs are modified for walking and running in antelopes
D. Arms are adapted for grasping and holding in human beings
E. Flippers are modified for swimming in whales

Question 59 :

• 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 60 :

• 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