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Agricultural Science Past Questions - Page 2

Exam Body:

Correct answers are highlighted in green.

Question 11

The sustem in which a farmer uses a piece of land for a period and abandons it for another land is called


A) Crop rotation

B) Mix cropping

C) Shifting cultivation

D) Ley farming

Exam Body: WAEC

Question 12

A socio-cultural factor affecting land availability for agriculture include use of land for


A) Constructin road

B) Building houses

C) Building factormies

D) Building religious houses

Exam Body: WAEC

Question 13

Organisms which may be benefical to crop include


A) Nematodes

B) Bacteria

C) Viruses

D) Protozoa

Exam Body: WAEC

Question 14

Which of the following rocks is sedimantary?


A) Limestone

B) Gabbro

C) Granite

D) Marble

Exam Body: WAEC

Question 15

Soil profile important in agriculture because it


A) Determines the soil catena

B) Determines the type of the landtenure system

C) Gives indication of types of cropsto grow

D) Promotes the weathering of rocks

Exam Body: WAEC

Question 16

What is the percentage water content of soil sample which weighed 180g when fresh and 120g when oven-dried?


A) 20.14%

B) 25.00%

C) 33.33%

D) 60.00%

Exam Body: WAEC

Question 17

A soil sample with a pH of 4.5 is said to be


A) Acidic

B) Alkaline

C) Neutral

D) Fertile

Exam Body: WAEC

Question 18

The property of the soil which cannot easily be changed by a farmer is the


A) Porosity

B) Structure

C) Texture

D) Acidity

Exam Body: WAEC

Question 19

A farmer continuously applies sulphate of ammonia to his farmland for many years, the resultant soil solution is most likely to


A) Leave blue litmus paper unchanged

B) Change blue litmus paper to red

C) Change red litmus paper to blue

D) Be rich in soil microbes

Exam Body: WAEC

Question 20

Application of water to the subsoil through perforated pipes is known as


A) Flooding irrigation

B) Subsurface irrigation

C) Spinkler irrigation

D) Overhead irrigation

Exam Body: WAEC