NSC Agricultural Sciences Animal Reproduction: Various options are provided as

Question

Various options are provided as possible answers to the following questions. Choose the correct answer and write only the letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.1 B.

1.1.1 ... is the movement of food from the blood into the tissues.
A. Absorption
B. Digestion
C. Assimilation
D. Ingestion

1.1.2 An example of water-soluble vitamins:
A. Vitamin A
B. Vitamin E
C. Vitamin K
D. Vitamin B₁

1.1.3 The end products of cellulose digestion in the rumen:
A. Butyric acid and amino acid
B. Fatty acids and glycerol
C. Acetic acid and propionic acid
D. Propionic acid and glucose

1.1.4 The intake of feed in ruminant farm animals involves the following:
(i) Animals use their snouts to gather feed.
(ii) Feed is partially chewed and mixed with saliva to form a bolus.
(iii) The tongue pushes the bolus backward down the throat.
(iv) Feed is later brought back for re-chewing.

Choose the CORRECT combination:
A. (i), (ii) and (iv)
B. (ii), (iii) and (iv)
C. (i), (ii) and (iii)
D. (i), (ii), (iii) and (iv)

1.1.5 Narrow stalls used in intensive farming to keep pregnant sows throughout the period of 16 weeks:
A. Pigsty
B. Gestation crates
C. Farrowing pens
D. Deep litter

1.1.6 Equipment used to restrain a large ruminant animal so that it can be given medication:
A. Crush
B. Kraal
C. Holding pens
D. Grazing camp

1.1.7 ONE of the following is NOT a sign of poor health in farm animals:
A. Animals are alert and lively.
B. Animals have dull and rough coats.
C. Pale and dull membranes of the eyes.
D. Difficulty breathing and coughing.

1.1.8 The following descriptions refer to external parasites:
(i) Live on the skin of the host
(ii) May be transmitted to humans being through ingestion of infected meat
(iii) May secrete toxins
(iv) May damage the skin of farm animals

Choose the CORRECT combination:
A. (i), (ii) and (iv)
B. (i), (iii) and (iv)
C. (ii) and (iv)
D. (i), (ii), (iii) and (iv)

1.1.9 Which ONE of the pictures below shows the normal foetal position?
A. Picture A
B. Picture B
C. Picture C
D. Picture D

1.2 Indicate whether each of the descriptions in COLUMN B applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN A.

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Answer

1.2.1 B only 1.2.2 A only 1.2.3 A only 1.2.4 None 1.2.5 A only

COLUMN A                               COLUMN B
1.2.1 A: Osmosis                      Passive absorption of volatile fatty acids through the rumen wall
1.2.2 B: Thyroid regulators        Chemical substances used to the feed of farm animals so that they become calm and eat more
1.2.3 A: Bunching                   The tendency of sheep and closer together during hot conditions
1.2.4 A: Anthelmintic             Chemicals used to kill ticks and mites
1.2.5 B: Freemartins           Animals which have both male and female reproductive organs

1.3 Give ONE word/term for each of the following descriptions. Write only the word/term next to the question numbers (1.3.1 to 1.3.5) in the ANSWER BOOK.

1.3.1 The percentage of feed that has not been excreted by an animal.
1.3.2 An approach that combines the advantages of modern, traditional and complementary treatment to provide health care for farm animals.
1.3.3 The failure of a cow to expel the placenta within 12 to 24 hours after parturition.
1.3.4 The process of removing fertilised egg cells from a superior donor cow.
1.3.5 The organelle in the mid-piece of a sperm cell supplying energy for movement.

1.4 Change the UNDERLINED WORD(S) in EACH of the following statements to make them TRUE. Write only the answer next to the question numbers (1.4.1 to 1.4.5) in the ANSWER BOOK.

1.4.1 Nitrogen-free extract is a measure of the quality of protein in a feed.
1.4.2 A drenching gun is a device used to administer liquid medication to farm animals to treat internal parasites.
1.4.3 Artificial insemination takes place when the female is allowed to mount for mating on the male.
1.4.4 The mesoderm is the outer germ layer from which skin, hooves and hair develop.
1.4.5 The stage of parturition during which the calf is pushed out is known as preparatory.

Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2022 - Paper 1

Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2022 - Paper 1

1.1.1 ... is the movement of food from the blood into the tissues.

1.1.2 An example of water-soluble vitamins:

1.1.3 The end products of cellulose digestion in the rumen:

1.1.4 The intake of feed in ruminant farm animals involves the following:

1.1.5 Narrow stalls used in intensive farming to keep pregnant sows throughout the period of 16 weeks:

1.1.6 Equipment used to restrain a large ruminant animal so that it can be given medication:

1.1.7 ONE of the following is NOT a sign of poor health in farm animals:

1.1.8 The following descriptions refer to external parasites:

1.1.9 Which ONE of the pictures below shows the normal foetal position?

1.2 Indicate whether each of the descriptions in COLUMN B applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN A.

1.3 Give ONE word/term for each of the following descriptions.

1.4 Change the UNDERLINED WORD(S) in EACH of the following statements to make them TRUE.

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