Waec Biology 1994 Past Questions and Answers

Question 21:

• WAEC 1994

Which of the following performs the same function as the contractile vacuole of a unicellular organism?

A. Kidney
B. Alimentary canal
C. Liver
D. Pancreas
E. Bladder

Question 22:

• WAEC 1994

Which of the following represents the correct order in a possible food chain?

A. Crustacean -> diatom -> fish -> man
B. Fish -> crustacean -> man -> diatom
C. Man -> fish -> crustacean -> diatom
D. Diatom -> crustacean -> fish -> man
E. Man -> diatom -> fish -> crustacean

Question 23:

• WAEC 1994

Which of the following relationships illustrates competition?

A. Cattle egret moving along with cattle
B. Goats and cows grazing on a small grass lawn
C. Mosses succeeding lichens in a rocky terrain
D. Red mangrove swamp dying and replaced by white mangrove
E. Forest trees, shrubs and grasses replacing white mangrove in a swamp

Question 24:

• WAEC 1994

Which of the following agents is responsible for the dispersal of the seed shown above?

A. Man
B. Water
C. Wind
D. Explosive mechanism
E. Animal

Question 25:

• WAEC 1994

The structure used by fishes to detect the presence and movement of other animals
by the vibration they produce is the

A. Eye
B. Nostril
C. Lateral line
D. Scales
E. Fins