Waec Biology Past Questions and Answers

Question 196:

• WAEC 1991

(a) Make a labelled diagram to show the internal structure of the mammalian ear.
(b) Describe the mechanism of hearing in mammals.
(c) State two ways of caring for the ear.

Question 197:

• WAEC 1991

(a) (i) List three components of an ecosystem (ii) Describe briefly the interaction among the components named in (a) (i).
(b) List three major steps that are usually taken in studying plants and animals in community.
(c) State the importance of each of the following in a population and explain how each affects the growth of a population:
(i) competition; (ii) pathogens; (iii)water.

Question 198:

• WAEC 1992

The organ which is sensitive to light in Euglena is the

A. Gullet
B. Chloroplast
C. Eye spot
D. Contractile vacuole
E. Flagellum

Question 199:

• WAEC 1992

The organ which is sensitive to light in Euglena is the

A. Gullet
B. Chloroplast
C. Eye spot
D. Contractile vacuole
E. Flagellum

Question 200:

• WAEC 1992

Which of the following is a similarity between a typical animal cell and a typical plant cell?presence of

A. Cellulose cell wall
B. Chlorophyll
C. Centrally-placed nucleus
D. Cell membrane
E. Large vacuole