WAEC Agricultural Science Past Questions & Answers - Page 315

1,571.

Which of the following does not influence rock weathering?

A.

Water

B.

Carbonation

C.

Roots

D.

Ammonification

E.

Temperature

Correct answer is D

No explanation has been provided for this answer.

1,572.

The factors which affect the number and the activities of soil micro-organisms include the following except

A.

Topography

B.

Soil moisture

C.

Soil aeration

D.

Degree of soil acidity

E.

Temperature

Correct answer is A

No explanation has been provided for this answer.

1,573.

The following are characteristics of quartz except

A.

Being granular

B.

Having shiny surface

C.

Being glass-like

D.

Having cleavage

E.

Being semi-translucent

Correct answer is D

No explanation has been provided for this answer.

1,574.

Ice causes rock weathering

A.

Through the processes of expansion and contraction

B.

Through movement of large rock fragments against large boulders

C.

By dissolving some minerals in disintegrated rock fragments

D.

By exerting an abrasive action on rock fragments

E.

Through chemical alteration of rock minerals

Correct answer is D

No explanation has been provided for this answer.

1,575.

Which of the following in not an effect of the North-East trade winds on agriculture?

A.

Encouraging growth of natural pasture

B.

Encouraging fruit setting or formation

C.

Inducing fruit ripening

D.

Causing heavy rainfall

E.

Drying forest trees

Correct answer is D

No explanation has been provided for this answer.