Biology 1991 JAMB Past Questions

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Which of the following characters is NOT sex-linked?

The most important factors which influence an organism's way of life in its habitat are

Organisms in an ecosystem are usually grouped according to their trophic level as

The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?

A. The population of I was higher than II at the beginning of the experiments
B. II was wiped out from the enviroment at the end of the experiments
C. The population of II was always lower than that of
D. The population of I was lower at the end of the experiment than at the beginning

A food web is more stable than a food chain because