WAEC Agricultural Science Past Questions & Answers - Page 2

6.

Soil structure is described as the

A.

Proportion of different sizes of soil particles

B.

Degree of water percolation within the soil

C.

Degree of soil aeration within the soil

D.

Arrangement of soil particles into aggregates

Correct answer is D

Soil structure refers to the way soil particles are organized and arranged into aggregates or clumps. It is an important characteristic of soil that influences various soil properties and processes, including water retention, aeration, root penetration, and nutrient availability.

 

7.

The diagram above illustrates a method of compost making. Study it and answer the question.

A material that could be used as starter in the method of compost making illustrated is

A.

Ash

B.

Straw

C.

Blood

D.

Urine

Correct answer is D

Urine can be used as a starter or compost activator in the method of compost making. Human urine is rich in nitrogen, which is an essential element for the composting process. Nitrogen is a key component that helps promote the growth and activity of beneficial microorganisms responsible for breaking down organic matter in the compost pile.

8.

The diagram above illustrates a method of compost making. Study it and answer the question.

The part labelled I is used for

A.

Checking the decomposition rate

B.

Hastening the fermentation rate

C.

Turning the compost materials

D.

Stacking the compost materials

Correct answer is C

The part labelled I is used for turning the compost materials.

9.

The diagram above illustrates a method of compost making. Study it and answer the question.

The method of compost milking illustrated in the diagram is

A.

Heap

B.

Bin

C.

Sheet

D.

Pit

Correct answer is D

The method of compost milking illustrated in the diagram is pit

10.

Ornamental plants are primarily cultivated to

A.

Provide fodder for livestock

B.

Beautify the environment

C.

Serve as mulching materials

D.

Serve as raw materials

Correct answer is B

Ornamental plants are primarily cultivated for their aesthetic value and decorative purposes. They are grown and maintained to beautify the environment, whether in gardens, parks, landscapes, or indoor settings.