ECOLOGY - Jamb Biology Past Questions and Answers

Question 186:

• JAMB 2002

The community of plants in which the same species occur from year to year is the

A. Annual species
B. Pioneer vegetation
C. Perennial species
D. Climax vegetation

Question 187:

• JAMB 2002

The physical and climatic factors of a region primarily determine the

A. Kinds of animal inhabiting the area
B. Types of plants found in the area
C. Nature of the soil in that region
D. Community of organisms in the region

Question 188:

• JAMB 2002

A step in the movement of energy through an ecosystem is a description that best fits the term

A. Food chain
B. Trophic level
C. Pyramid of numbers
D. Food web

Question 189:

• JAMB 2002

In a field experiment, the frequency of water leaf was observed to be 48 after 20 tosses of a 2m² quadrat. What is the density of the plants in the field?

A. 1.2 per m²
B. 2.4 per m²
C. 4.8 per m²
D. 9.6 per m²

Question 190:

• JAMB 2002

The addition of lime to clayed soil serves to

A. Aid water retention
B. Close up the texture
C. Prevent water logging
D. Improve capillary action