WAEC Agricultural Science Past Questions & Answers - Page 89

441.

The process of removing excess maize seedlings from a stand is known as

A.

Pruning

B.

Supplying

C.

Thinning

D.

Weeding

Correct answer is C

No explanation has been provided for this answer.

442.

Which of the following conditions is a characteristic of a poorly drained soil?

A.

Presence of a large number of termites

B.

Presence of high amount of humus

C.

Decrease in the activities of micro organisms

D.

High soil fertility and productivity

Correct answer is C

No explanation has been provided for this answer.

443.

Irrigation can be described as the

A.

Reduction of soil water

B.

Spraying of minerals on plants

C.

Application of dissolved fertilizers to the soil

D.

Application of water to the soil

Correct answer is D

No explanation has been provided for this answer.

444.

In the carbon cycle, carbon dioxide in the air may be replenished by

A.

Respiration

B.

Transpiration

C.

Lighting

D.

Denitrification

Correct answer is A

No explanation has been provided for this answer.

445.

Lost soil nutrients can be replenished by the following methods except

A.

Organic manuring

B.

Fertilizer application

C.

Continuous grazing

D.

Cover cropping

Correct answer is C

No explanation has been provided for this answer.