WAEC Agricultural Science Past Questions & Answers - Page 70

346.

Insect-pests of crops could be controlled by

A.

Cover-cropping

B.

Mulching

C.

Crop rotation

D.

Organic manuring

Correct answer is C

No explanation has been provided for this answer.

347.

Which of the following pairs of diseases attack coffee?

A.

Mosaic and smut

B.

Smut and ridge

C.

Rust and mosaic

D.

Rust and leaf spot

Correct answer is D

No explanation has been provided for this answer.

348.

Which of the following practices is not a way of maintaining ornamental plants?

A.

Pruning

B.

Weeding

C.

Watering

D.

Harvesting

Correct answer is D

No explanation has been provided for this answer.

349.

Which of the following methods of plant propagation is limited to plants which root easily?

A.

Grafting and cutting

B.

Layering and cutting

C.

Budding and layering

D.

Grafting and layering

Correct answer is B

No explanation has been provided for this answer.

350.

A raw material that could be obtained from the forest is

A.

Margarine

B.

Honey

C.

Mutton

D.

Butter

Correct answer is B

No explanation has been provided for this answer.