WAEC Agricultural Science Past Questions & Answers - Page 14

66.

A by-product of all livestock is

A.

hide

B.

Horn

C.

Milk

D.

Meat

Correct answer is B

No explanation has been provided for this answer.

67.

Lactation normally occurs

A.

At the onset of conception

B.

At the onset of puberty

C.

After gestation

D.

After mating

Correct answer is C

No explanation has been provided for this answer.

68.

Use the information below to answer this question.

I. Yellowing of leaves
II. Raised brown spots on the leaves
III. Drying up of leaves
IV. Exudation of gum

The disease of citrus described above is

A.

Die-back

B.

Gummosis

C.

Tristeza

D.

Blight

Correct answer is B

No explanation has been provided for this answer.

69.

Soil-borne diseases could be controlled in the nursery by

A.

Mulching

B.

Manuring

C.

Heat treatment

D.

Provision of shade

Correct answer is C

No explanation has been provided for this answer.

70.

Which of the following crops is correctly matched with a disease that affects it?

A.

Maize - smut

B.

Sorghum - scab

C.

Rice- black arm

D.

Yam- blast

Correct answer is A

No explanation has been provided for this answer.