Agricultural Science questions and answers

Agricultural Science Questions and Answers

A comprehensive list of Agricultural science questions with answers to help you prepare for JAMB, WAEC, NECO, Post UTME exams.

1.

Which of the following is not a pre-planting operations?

A.

Land clearing

B.

Stumping

C.

Thinning

D.

Farm layout

Correct answer is C

Pre planting operations are the operations carried out before planting. Thinning is a post planting operation.

 

2.

Cultural practices can be classified into the following except

A.

Pre-planting operations

B.

Planting operations

C.

Post-planting operations

D.

In-planting operations

Correct answer is D

Cultural practices are the various activities carried out on the farm before, during and after planting to ensure proper growth and establishment of crops.

3.

The botanical name of maize is

A.

Corn seed

B.

Zea mays

C.

Rattus rattus

D.

Discorea spp

Correct answer is B

Maize also called corn is a member of the grass family (Gramineae). It produces grains, use as food by human beings and livestock. Zea mays is botanical name of maize.

4.

Which of these operations comes first in cultural practice?

A.

Tillage

B.

Ridges

C.

Stumping

D.

Harvesting

Correct answer is C

Stumping is the removal of stumps by digging them out manually using cutlasses and axes. It can also be done mechanically by using bulldozer. Stumps are the left over cut trees on the farm left on the soil surface.

5.

Which of the following is not an organic manure?

A.

Green manure

B.

Farmyard manure

C.

Compost

D.

Fertilizer

Correct answer is D

Fertilizers are chemical substances which are usually prepared in the farm, they are made in form of liquid, powder, granules, pellets or crystals

 

6.

The main purpose of including leguminous crops in pastures is to serve as a source of

A.

Proteins

B.

Vitamins

C.

Minerals

D.

Carbohydrates

Correct answer is A

Leguminous crops contain high level of protein.

7.

A soil with the PH range of 6.1 to 6.9 can be described as

A.

Alkaline

B.

Very acidic

C.

Slightly alkaline

D.

Slightly acidic

Correct answer is D

PH scale is number 1-14.1-6.9 is acidic ,the close it is to 1 the more acidic it becomes and the closer it is to 6.9 the less /slightly acidic it becomes ,while 7 is neutral ,8-12 is alkaline and the closer it is to 12 the highly it gets and the closer it is to 8 the less/slightly alkaline it is.

8.

During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by

A.

Ice

B.

Man

C.

Wind

D.

Temperature

Correct answer is D

Increase in temperature cause breakdown of rocks ,this process is called weathering.

9.

The soil nutrient which is important as a constituent of plant proteins and hormones is

A.

Calcium

B.

Sulphur

C.

Iron

D.

Potassium

Correct answer is B

Constituents of protein includes ;carbon, hydrogen, nitrogen, oxygen or sulfur.

10.

Which of the following is not component of soil?

A.

Air

B.

Water

C.

Organic matter

D.

Texture

Correct answer is D

Texture is a property of soil and not component.