ECOLOGY - Jamb Biology Past Questions and Answers

Question 146:

• JAMB 1996

Nitrifying bacteria keep the soil fertile by

A. Converting nitrate to nitrogen
B. Converting ammonium salt to nitrate
C. Converting atmospheric nitrogen to plant nitrogen
D. Converting nitrate to nitrous oxide
E. Converting atmospheric nitrogen to nitrates

Question 147:

• JAMB 1996

The study of organism and the environment of an abandoned farmland is the ecology of?

A. A community
B. A population
C. A specie
D. A habitat
E. An ecosystem

Question 148:

• JAMB 1997

Which organism in the food-web illustrated above is an omnivore?

A. Weevils
B. Rat
C. Hawk
D. Prayer mantis

Question 149:

• JAMB 1997

Toads and lizards in an ecosystem depend on a limited quantity of food. This is an example of

A. Parasitism
B. Intraspecific competition
C. Predation
D. Interspecific competition

Question 150:

• JAMB 1997

The Southern Guinea Savanna differs from the Northern Guinea Savanna in that it has

A. Lower rainfall and shorter grasses
B. Less grasses and scattered trees
C. More rainfall and taller grasses
D. Less arboreal and burrowing animals