JAMB Agricultural Science Past Questions & Answers - Page 53

261.

Which of the following type of rations will supplies the animal with just the quantity of nutrients that are enough to enable the animal carry on with vital body activities without losing or gaining another substance?

A.

Maintenance ration

B.

Production ration

C.

Balanced ration

D.

Measured ration

Correct answer is A

A maintenance ration is the amount of feed needed to prevent an increase or decrease in the weight of the animal. The ration will just be enough to maintain the supplies of energy and protein for all metabolic activities such as respiration, blood circulation, digestion, locomotion, maintenance of body temperature.

262.

The feed that is regularly offered to or consumed by the animal is called

A.

Ratio

B.

Ration

C.

Nutrient

D.

Content

Correct answer is B

A ration is defined as the feed that is regularly offered to or consumed by the animal. Diets are formulated to meet specific metabolic or physiological functions which include growth, lactation, reproduction, maintenance of pregnancy, egg laying, weaning, fattening etc

263.

____________ is said to occur when a ration does not provide all the food nutrients in adequate quantities needed by animal.

A.

Malnutrient

B.

Malnutritional

C.

Malnourish

D.

Malnutrition

Correct answer is D

Malnutrition is said to occur when a ration (amount of feed provided to an animal per day) does not provide all the food nutrients(carbohydrate, protein,fats and oils, vitamins, minerals, water and other feed additives) in adequate quantities. Those nutrients wanting are said to be deficient which eventually results in nutritional disease.

264.

The B-Horizon of soil profile is also called the

A.

Top soil

B.

Sub-soil

C.

Parent materials

D.

Bedrock

Correct answer is B

The B-horizon, also called the sub-soil, is the next horizon immediately after the top soil. It is rich in minerals which are carried or leached down by percolating water.

 

265.

The A-Horizon of soil profile is also called the

A.

Top soil

B.

Sub-soil

C.

Parent materials

D.

Bedrock

Correct answer is A

The A-Horizon, also called the top soil, represents the surface layer of the soil profile. This horizon contains more organic matter than other horizons. The A horizon, the top soil, is the most weathered and leached of all the soil horizons.