Excercise
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 lamp?
Answer: (a) From the hair of the sheep, wool is formed.
(b) White fleece of the lamp are the white hairs of the lamp.
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.
Answer: (iii) both a and b
3)Which of the following does not yield wool?
(i) Yak (ii) camel (iii) Goat (iv) Woolly dog
Answer: (iv) Woolly dog
4) What is meant by the following terms?
(i) Rearing (ii) Shearing (iii) Sericulture
Answer:
(i) Rearing means helping and taking care of someone for their growth.
(ii) The process of removal of the fleece of the sheep along with a thin layer of skin from its body is called shearing.
(iii) Sericulture is a culture of silkworms or the rearing of silkworms for silk production.
5) Given below is a sequence of steps in the processing of wool. Which are the missing steps. Add them. Shearing, ________ , Sorting, _______, ________, _________.
Answer:
Shearing, Scouring , Sorting ,_Picking of burrs , Dying of fibres , making of yarn.
6) Out of the following, which are the two terms related to silk production?
Sericulture, floriculture, moriculture, apiculture and silviculture.
Hints:
- (i) Silk production involves cultivation of mulberry leaves and rearing silkworms.
- (ii) Scientific name of mulberry is Morus alba.
Answer:
(i) Sericulture and
(ii) Moriculture
7) Match the words of column I with those given in column II:
Apex Class 
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