Waec Biology 1996 Past Questions and Answers

Question 51:

• WAEC 1996

Which of these is not a hereditary variation?

A. Infant paralysis
B. Blood group
C. Sickle cell
D. Shape of face and nose
E. Colour of hair.

Question 52:

• WAEC 1996

One of Mendel’s experiments was repeated by crossing a red variety of pepper with that of a yellow variety
which produced all red offspring. The red offspring were then self pollinated and these produced both red
and yellow pepper. The yellow colour can be said to be

A. Dominant to red
B. Recessive to red
C. Homozygous to red
D. Heterozygous to red
E. Linked to red

Question 53:

• WAEC 1996

Which of the following statements is not true about chromosomes?

A. Each chromosome is made up of two chromatids
B. Body cells have diploid numbers of chromosomes
C. Homologous chromosomes do not occur in pairs naturally
D. The sex cells have haploid number of chromosomes
E. Chromosomes have many tranverse bands

Question 54:

• WAEC 1996

Cross-breeding is a way of

A. Developing superior varieties of plants only
B. Developing superior varieties of animals only
C. Developing disease-resistant varieties only
D. Encouraging random reproduction in agriculture
E. Applying the principles of heredity in agriculture

Question 55:

• WAEC 1996

The wings of bats and birds, the flippers of whale and the fins of fish are examples of

A. Adaptive radiation
B. Vestigial organs
C. Continuous variation
D. Convergent evolution
E. Divergent evolution.