Question: 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?
Answer:
(a) Wool is obtained from the hairy fibres (hair) of the sheep.
(b) White fleece of the lamb means the white-coloured hair of the lamb.
Question: 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
Q3. Which of the following does not yield wool?
(i) Yak
(ii) Camel
(iii) Goat
(iv) Woolly dog
Answer:
(iv)Woolly dog
Question: 4
What is meant by the following terms?
(i) Rearing
(ii) Shearing
(iii) Sericulture
Answer:
(i) Rearing: Here Rearing means rearing an animal like sheep. It means to breed and raise.
(ii) Shearing: It is the process of removing fleece along with a thin layer of skin from the body of sheep.
(ii) Sericulture: The rearing of silkworms to obtain silk is known as Sericulture.
Question: 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
Question: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 the cultivation of mulberry leaves and rearing silkworms.
(ii) Scientific name of mulberry is Morus alba.
Answer.
Sericulture and moriculture
Question: 8 Match the words of Column I with those given in Column II:
Column I Column II
(i) Scouring (a) Yields silk fibres
(ii) Mulberry leaves (b) Wool-yielding animal
(iii) Yak (c) Food of silkworm
(iv) Cocoon (d) Reeling
(e) Cleaning sheared skin
Answer:
Column I Column II
(i) Scouring (e) Cleaning sheared skin
(ii) Mulberry leaves (c) Food of silkworm
(iii) Yak (b) Wool-yielding animal
(iv) Cocoon (a) Yields silk fibres