1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2016 - Paper 1
Question 1
1.1 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... show full transcript
Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2016 - Paper 1
Step 1
1.1.1 The biological value (BV) of protein is an index of the protein quality, which is dependent on the ...
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Answer
The biological value (BV) of protein is primarily dependent on the amino acid content and the ratio in which it occurs, making option B the correct choice.
Step 2
1.1.2 Papillae in the wall of the rumen serve as ...
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Answer
Papillae in the rumen do not function as heating rods but aid significantly in nutrient absorption. Thus, the correct answer is D: grinding rods during the grinding of feed.
Step 3
1.1.3 A deficiency of this mineral causes pica in farm animals:
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Answer
Pica in farm animals is primarily caused by a deficiency of Zinc. Therefore, the correct answer is B.
Step 4
1.1.4 The process of alternating contractions and relaxations of the muscles that push food through the alimentary canal:
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Answer
This process is known as Peristalsis, making C the correct answer.
Step 5
1.1.5 Which of the following will mostly be used in indigenous farming?
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Answer
The combination typically used in indigenous farming practices includes (ii) Movable electrical fencing and (iv) Kraal made up of sticks. Thus, the correct answer is B.
Step 6
1.1.6 The best method to handle pigs:
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Answer
To handle pigs effectively, one should make oneself known quietly and gently (i) and guide them with a plywood board (iii). Therefore, the answer is D.
Step 7
1.2.1 A: Oatmeal
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Answer
B only
Step 8
1.2.2 A: Oats straw
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Answer
Both A and B
Step 9
1.2.3 A: Halter
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Answer
None
Step 10
1.2.4 A: Electric prodder
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Answer
Both A and B
Step 11
1.2.5 A: Foot bath
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A only
Step 12
1.4.1 Hay is produced when a green crop is kept under anaerobic conditions.
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Answer
The correct term is Silage.
Step 13
1.4.2 Parakeratosis is caused by a deficiency of __________.
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Answer
The deficiency is related to Zinc.
Step 14
1.4.3 Feed flow is a method used to work out the exact quantities of feed to be included in a feed mixture to supply the required value.
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Answer
The method mentioned is referred to as the Pearson square.
Step 15
1.4.4 Taperworm is an internal parasite that affects the livers of sheep.
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Answer
This parasite is known as fluke worm/liver fluke.
Step 16
1.4.5 Twin lambs developing from a single zygote are referred to as __________.
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