WAEC Agricultural Science Past Questions & Answers - Page 149

741.

If grains are not properly dried before storage, they are likely to

A.

Lose viability at a fast rate

B.

Remain dormant for a long time

C.

Synthesize carbohydrate during storage

D.

Germinate faster when planted in the field

Correct answer is A

No explanation has been provided for this answer.

742.

The farm power which is most adaptable to farm operation in West Africa is

A.

Animal power

B.

Wind power

C.

Human power

D.

Solar power

Correct answer is C

No explanation has been provided for this answer.

743.

Determine the weight of potassium in a 50kg NPK (20:20:10) bag of fertilizer.

A.

5.0kg

B.

7.0kg

C.

10.0kg

D.

20.0kg

Correct answer is C

No explanation has been provided for this answer.

744.

Which of the following statement are advantages of mulching? It 
I. Controls weeds 
II. Conserves soil moisture 
III. Increases soil temperature 
IV. Reduces soil pH

A.

I and II only

B.

I and III only

C.

II and IV only

D.

III and IV only

Correct answer is A

No explanation has been provided for this answer.

745.

Loss of nitrogen from the soil through the removal of oxygen from nitrates by bacteria is known as

A.

Ammonification

B.

Dehydration

C.

Dentrification

D.

Nitrification

Correct answer is C

No explanation has been provided for this answer.