WAEC Agricultural Science Past Questions & Answers - Page 264

1,316.

In the process of recycling carbon in nature, carbondioxide is used by crops during

A.

Respiration

B.

Decomposition

C.

Photosynthesis

D.

Transpiration

Correct answer is C

No explanation has been provided for this answer.

1,317.

Nitrogen is taken up by plant roots in the form of

A.

Nitrate ion

B.

Nitrite ion

C.

Nitric acid

D.

Nitrogen gas

Correct answer is A

No explanation has been provided for this answer.

1,318.

Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?

A.

High vegetative growth with low yield

B.

High vegetative growth with high yield

C.

Low vegetative growth with high yield

D.

Low vegetative growth with low yield

Correct answer is A

No explanation has been provided for this answer.

1,319.

Capillarity is highest in

A.

Silt

B.

Loam

C.

Sand

D.

Clay

Correct answer is D

No explanation has been provided for this answer.

1,320.

An acidic soil can be neutralized by the addition of

A.

Urea

B.

Ammonium sulphate

C.

Wood ash

D.

Laterite

Correct answer is C

No explanation has been provided for this answer.