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Answer:
1. You must be familiar with the following nursery rhymes:
(i) ‘Baa baa black sheep, have you any wool.’
(ii) ‘Mary had a little lamb, whose fleece was white as snow.’
Answer the following:
(a) Which parts of the black sheep have wool?
(b) What is meant by the white fleece of the lamb?
Solution:
a) Wool is obtained from hairy fibres of the sheep.
b) White fleece of the lamb refers to the white colour of their fur.
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2. The silkworm is (a) a caterpillar, (b) a larva.
Choose the correct option.
(i) a (ii) b (iii) both a and b (iv) neither a nor b.
Solution:
(iii) both a and b
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3. Which of the following does not yield wool?
(i) Yak (ii) Camel (iii) Goat (iv) Woolly dog
Solution:
The answer is (iv) Woolly dog
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4.What is meant by the following terms? (i) Rearing (ii) Shearing (iii) Sericulture
Solution:
i) Raising of domestic animals like sheep, goat, yak, cow and buffaloes for commercial purposes such as for milk and fur is known as rearing.
ii) Shearing is a process of removal of animal hair by using machines similar to those used by barbers.
ii) Rearing of silkworms to get silk is known as Sericulture.
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5. Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.
Shearing, __________, sorting, __________, __________, _________.
Solution:
Shearing, Scouring, sorting, picking of burrs, dying of fibres, making of yarn.
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