Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2018 - 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 numbers (1.1.1 to... show full transcript
Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2018 - Paper 1
Step 1
The first three compartments of a ruminant stomach:
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Answer
The first three compartments of a ruminant stomach are referred to as the Rumen, Reticulum, and Omasum. The answer is B: Forestomach, as it encompasses the first three compartments.
Step 2
Volatile fatty acids that are end products of rumen microbial fermentation include ... acids.
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Answer
The volatile fatty acids produced in the rumen include short-chain fatty acids such as acetic and butyric acids. Thus, the answer is A: methanoic and butyric.
Step 3
An example of a protein-rich concentrate:
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Answer
A typical protein-rich concentrate suitable for animal feed is Fish meal due to its high protein content. Therefore, the answer is C: Fish meal.
Step 4
During the active absorption of food ...
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Answer
During active absorption, nutrients like glucose and amino acids are absorbed actively against the concentration gradient, requiring energy. Thus, the correct answer is D: Glucose and amino acids are absorbed along the concentration gradient.
Step 5
The best explanation of external parasites on cattle:
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Answer
External parasites can damage the skin, produce toxins, and lead to other health issues. Hence, the correct combination of statements is B: (ii), (iii) and (iv).
