Waec Biology Past Questions and Answers

Question 126:

• WAEC 1990

A pair of genes which controls a trait is described as

A. Dominant
B. Recessive
C. Allele
D. Variant
E. Hybrid

Question 127:

• WAEC 1990

The genetic make-up of an organism is described as its

A. Phenotype
B. Genotype
C. Character
D. Chromosome
E. Allele

Question 128:

• 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 129:

• 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 130:

• 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