JAMB Agricultural Science Past Questions & Answers - Page 13

61.

An important farm machine used for coupling many implements is

A.

Disc harrow

B.

Harvester

C.

Tractor

D.

Plough

Correct answer is C

The tractor can be used for coupling a variety of farm implements for plowing, planting cultivating, fertilizing and harvesting crops.

 

62.

What are the main components of soil?

A.

Water, nutrients, and microorganisms

B.

Organic matter, minerals, and air

C.

Sand, silt, and clay

D.

All of the above

Correct answer is D

Soil is a complex mixture of different components that collectively contribute to its properties and fertility. The main components of soil include sand, silt, clay, organic matter, minerals, water, nutrients, and microorganisms.

63.

The most suitable source of power for stationary equipment on the farm is

A.

Machinery

B.

Electricity

C.

Animal

D.

Man

Correct answer is B

Electricity is the most suitable source of power for stationary farm equipment.

 

64.

The Balami is a breed of

A.

Pig

B.

Sheep

C.

Goat

D.

Cattle

Correct answer is B

The Balami is a breed of sheep. It is one of the domestic sheep found in Africa, particularly in Nigeria. Therefore, the correct answer is 'Sheep'.

65.

The main source of power for subsistence agriculture is

A.

Animal

B.

Machine

C.

Electricity

D.

Man

Correct answer is D

The main source of power for substinence agriculture is man. Substinence agriculture involves the production of food on a small scale by a farmer to cater mainly for his family. As a result, the use of machinery is not needed, rathe the farmer relies on man power to achieve everything he needs to carry out on the farm.