Waec Biology Past Questions and Answers

Question 816:

• WAEC 2002

The genes affecting the same trait and are located at the same position on the homologous chromosomes
are called

A. Autosomes
B. Alleles
C. Loci
D. Chromatids

Question 817:

• WAEC 2002

Which of the following is an adaptation by plants to reduce the rate of water loss in a dry habitat? Possession of

A. A few sunken stomata on the lower epidermis only
B. Long leaf tendrils
C. Leaves with serrated edges
D. Strong tap root

Question 818:

• WAEC 2002

The following are social insects except

A. Wasps
B. Termites
C. Bees
D. Cotton stainer

Question 819:

• WAEC 2002

Which of the following can be considered as a direct evidence of evolution?

A. Classification
B. Comparative anatomy
C. Comparative embryology
D. Fossil record

Question 820:

• WAEC 2002

(a) Explain the terms:
(i) Parasitism
(ii) Commensalism
(b) Mention:
(i) one fungal parasite of a plant and its host
(ii) one bacterial parasite of humans.
(c)(i) List four symptoms of malaria.
(II) Mention six methods of controlling malaria in West Africa