WAEC Biology Past Questions & Answers - Page 121

601.

Tropical rain forests can be conserved by the following practices except?

A.

agroforestry

B.

deforestation

C.

shifting cultivation

D.

 crop rotation

Correct answer is B

Deforestation leads to a huge loss of biodiversity. About 80% of the global biodiversity is located in tropical rainforests.

602.

Which of the following practices does not contribute to intensive depletion of forest resources in West Africa?

A.

Use of powerful tools for felling trees

B.

regrowing of forest trees

C.

clearance of forests for cash crops

D.

use of fire or hunting in forests

Correct answer is B

No explanation has been provided for this answer.

603.

The following are natural resources except

A.

rubber

B.

soil

C.

water

D.

cellophane

Correct answer is D

No explanation has been provided for this answer.

604.

An abandoned refuse dump may be a good site for an intending vegetable farmer because

A.

very little manual work would be done by the farmer

B.

microbial activity had released nutrients into the soil

C.

the roots of vegetable seedlings easily get enough light

D.

refuse dumps possess plenty of gas which scares away rodents

Correct answer is B

No explanation has been provided for this answer.

605.

The drugs which inhibit the growth of disease-causing organisms and thus used in the treatment of infections are referred to as

A.

antibodies

B.

antibiotics

C.

antitoxic

D.

septics

Correct answer is B

No explanation has been provided for this answer.