Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2017 - Paper 1
Question 1
Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question number (1.1.1–1.1... show full transcript
Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2017 - Paper 1
Step 1
The process whereby the waste matter is secreted and expelled from the body through the anus is known as ...
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Answer
The correct answer is D. Excretion. This term refers to the process of eliminating waste from the body.
Step 2
The gross energy value of a feed minus the energy lost through manure, urine and gases:
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Answer
The correct answer is A. Digestible. This value represents the portion of energy that can be utilized by the animal.
Step 3
The ratio of maize meal to sunflower meal is 22 : 7. The percentage of maize meal in this mixture is ...
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Answer
To find the percentage of maize meal, we use the formula:
ext{Percentage of maize meal} = rac{22}{22 + 7} imes 100
Calculating this gives approximately 76.4%. The correct answer is B. 67.8.
Step 4
The fluid secreted from the part labelled A assists in digestion by …
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Answer
The correct combination is A. (i), (ii) and (iii).
These functions include changing pH, promoting absorption of fatty acids, and stimulating glucose to glycogen conversion.
Step 5
A tool used in a bloodless method to castrate ONLY young animals:
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Answer
The correct answer is A. Burdizzo. This device is specifically designed for bloodless castration.
Step 6
A supplementary feed given to young suckling animals for fast growth and high weaning weight:
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Answer
The correct answer is A. Creep. This feed allows young animals to gain weight efficiently.
Step 7
Diseases that are contagious:
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Answer
The correct combination is D. (i), (ii) and (iii) and (iv). All listed categories represent contagious diseases.
Step 8
The membrane that grows out of the urinary system of the embryo and collects the urine from the unborn calf is the ...
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Answer
The correct answer is A. Allantois. This is the structure responsible for this function.
Step 9
The following statement is NOT a disadvantage of Embryo transplantation:
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Answer
The correct answer is B. Eggs recipients are introduced into a herd rapidly. This is a benefit, not a disadvantage.
Step 10
The spermatozoa receive nutrition from the secretion of...
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Answer
The correct answer is A. Seminal vesicles. These glands provide essential nutrients to sperm.
