JAMB Biology Past Questions & Answers - Page 253

1,261.

The addition of lime to clay soil serves to

A.

aid water retention

B.

close up the texture

C.

prevent water logging

D.

improve capillary action

Correct answer is D

No explanation has been provided for this answer.

1,262.

The supporting tissue in xylem is most poorly developed in

A.

mangrove swamp plants

B.

grassland plants

C.

submerged water plants

D.

desert plants

Correct answer is C

No explanation has been provided for this answer.

1,263.

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

Correct answer is A

No explanation has been provided for this answer.

1,264.

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

Correct answer is B

No explanation has been provided for this answer.

1,265.

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

Correct answer is D

No explanation has been provided for this answer.