WAEC Agricultural Science Past Questions & Answers - Page 29

141.

Which of the following statements is not a reason for budding? The resulting plants_______

A.

Can withstand adverse climatic conditions

B.

Flower and fruit early

C.

Are more disease resistant

D.

Develop broader leave for photosynthesis

Correct answer is A

No explanation has been provided for this answer.

142.

In green manuring, crops are ploughed into the soil just before flowering in order to

A.

Control soil pathogens

B.

Enrich the soil with nutrients

C.

Control soil erosion

D.

Increase the soil temperature

Correct answer is B

No explanation has been provided for this answer.

143.

The growing of only one crop on a piece of land from year to year is known as

A.

Mixed cropping

B.

Crop rotation

C.

Monoculture

D.

Shifting cultivation

Correct answer is C

No explanation has been provided for this answer.

144.

In a crop rotation system, it is usually preferred that cassava comes last in the rotation because it

A.

Adds nitrogen to the soil

B.

Is a shallow feeder

C.

Is a deep rooted crop

D.

Is a perennial crop

Correct answer is C

No explanation has been provided for this answer.

145.

Liquid fertilizers and pesticides could be applied through

A.

Furrow irrigation

B.

Channel irrigation

C.

Sprinkler irrigation

D.

Flood irrigation

Correct answer is C

No explanation has been provided for this answer.