Waec Biology 1995 Past Questions and Answers

Question 41:

• WAEC 1995

Which of these is not applicable to the circulation of water- in nature?

A. Water removed from oceans are Permanently lost
B. Water constantly evaporates from the seas, rivers, lakes and soil
C. Water vapour rises. cools, condenses and precipitates as rain and dew
D. Water is absorbed by plants and animals from their external environment
E. Plants lose water by transpiration and decay

Question 42:

• WAEC 1995

An association between two organisms in which both benefit is called

A. Parasitism
B. Commensalism
C. Symbiosis
D. Predation
E. Competition

Question 43:

• WAEC 1995

Which of the following is not an outcome of ecological succession?

A. There is a progressive change in species structure, organic matter and energy flow
B. The climax stage consists of a comparatively long lasting species composition
C. There is no dynamic equilibrium between the community and habitat in the climax stage
D. Communities occurring later in the sequence of succession are more complex
E. There are fewer dominant species in the late stages of succession.

Question 44:

• WAEC 1995

Which of the following is not an effect of over-crowding on a population?

A. Death
B. Competition
C. Commensation
D. Aggression
E. Cannibalism

Question 45:

• WAEC 1995

The diagram above represent the shape of major group of bacteria
The groups staphylococci and streptobacilli are represented by

A. I and II
B. II and IV
C. III and VII
D. IV and VII
E. IV and VIII