JAMB Agricultural Science Past Questions & Answers - Page 52

256.

Which of the following is a powerful and expensive multipurpose motor vehicle used for lifting or pulling farm implements?

A.

Bulldozer

B.

Tractor

C.

Sheller

D.

Incubator

Correct answer is B

TRACTOR: It is a powerful and expensive multipurpose motor vehicle used for lifting or pulling farm implements
-BULLDOZERS: They are powerful tractors and expensive machines with a broad steel blade or sheet at the front.
-SHELLERS: These are machines operated electrically, mechanically or manually. Shellers are used to separate the seeds from the husk or cob.
-INCUBATORS: These are machines which are used for hatching fertilized eggs artificially.

257.

Preservation of fish prevents the following except

A.

Injury

B.

Spoilage

C.

Destruction

D.

Processing

Correct answer is D

Preservation prevents spoilage, injury or destruction and this keeps the fish in edible condition for a long time. Preservation does not prevent processing

258.

________ is a disease condition which emanates from inadequate nutrition.

A.

Nutritional deficiency

B.

Nutritional adequacy

C.

Nutritional efficiency

D.

Nutritional sufficiency

Correct answer is A

Nutritional deficiency is therefore defined as a disease condition which emanates from inadequate nutrition. It is indicated by specific symptoms when particular nutrients are absent or unavailable in the diet.

 

259.

Which of the following classes of nutrient is used only for energy production in farm animals?

A.

Protein

B.

Minerals

C.

Fat and oil

D.

Carbohydrates

Correct answer is D

Carbohydrates are the main source of energy for the body. They are sugars, starches and dietary fibre.

260.

The quantity of ration that can supply the requirement nutrients above the maintenance to enable the animal produce the form of animal product for which the livestock is kept is known as

A.

Balanced ration

B.

Measured ration

C.

Production ration

D.

Maintenance ration

Correct answer is C

The production ration can be for meat, growth, milk, wool and egg production. The food is supplied in excess of maintenance requirements.