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Chapter 3 Fibre to Fabric Solutions

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 - 1 : -

a) Wool is obtained from hairy fibres of the sheep.

b) White fleece of the lamb refers to the white colour of their fur.

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 - 2 : -

(iii) both a and b

Question - 3 : -
Which of the following does not yield wool?

(i) Yak (ii) Camel (iii) Goat (iv) Woolly dog

Answer - 3 : -

The answer is (iv) Woolly dog

Question - 4 : - What is meant by the following terms? (i) Rearing (ii) Shearing (iii) Sericulture

Answer - 4 : -

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.

Question - 5 : -
Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.

Shearing, __________, sorting, __________, __________, _________.

Answer - 5 : - Shearing, Scouring, sorting, picking of burrs, dying of fibres, making of yarn.

Question - 6 : - Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.

Answer - 6 : -

Question - 7 : -
 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 - 7 : -

Sericulture and moriculture

Question - 8 : - Match the words of Column I with those given in Column II:

Column-I

Column-I

1. Scouring

(a) Yields silk fibres

2. Mulberry leaves

(b) Wool yielding animal

3. Yak

(c) Food of silkworm

4. Cocoon

(d) Reeling

(e) Cleaning sheared skin

Answer - 8 : -

Column-I

Column-I

1. Scouring

(e) Cleaning sheared skin

2. Mulberry leaves

(c) Food of silkworm

3. Yak

(b) Wool yielding animal

4. Cocoon

(a) Yields silk fibres

Question - 9 : -
Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words.

Down

(D) 1 : Thorough washing

2 : Animal fibre

3 : Animal fibre

Across

(A) 1 : Keeps warm

2 : Its leaves are eaten by silkworms

3: Hatches from egg of moth

Answer - 9 : -

Down:

1D. Scour

2D. Silk

3D. Fibre

Across

1A. Wool

2A. Mulberry

3A. Caterpillar

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