WAEC Agricultural Science Past Questions & Answers - Page 138

686.

The fertility of soils under forest is sustained mainly by

A.

Nutrient recycling

B.

Rodent activities

C.

Being protected from direct rays of the sun

D.

Preventing raindrops from directly hitting the soil

Correct answer is A

No explanation has been provided for this answer.

687.

A serious pest of sweet potato whose larvae destroy the foliage is

A.

Leaf miners

B.

Weevils mea

C.

Mealy bugs

D.

Aphids

Correct answer is A

No explanation has been provided for this answer.

688.

Cassava mosaic disease is transmitted by

A.

Heteroligus meles

B.

Maruca testulalis

C.

Sesamia spp

D.

Bemisia nigerensis

Correct answer is D

No explanation has been provided for this answer.

689.

An advantage of weeds is that they are used to

A.

Control insect pest

B.

Check grazing by animals

C.

Check erosion

D.

Control diseases

Correct answer is C

No explanation has been provided for this answer.

690.

Floriculture deals with the study of

A.

Flowers

B.

Fossils

C.

Weeds

D.

Insects

Correct answer is A

No explanation has been provided for this answer.