Lesson: Fibre to Fabric

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?

Solution:

(a) The skin of the black sheep will have wool.

(b) White fleece of the lamb means the animal has white coloured hair on its skin.

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

Solution:

(iii) both a and b

Question: 3

Which of the following does not yield wool?

(i) Yak

(ii) Camel

(iii)Goat

(iv) Woolly dog

Solution:

(iv)

Question: 4

What is meant by the following terms?

(a) Rearing

(b) Shearing

Solution:

(a) Rearing refers to taking care of animals that includes feeding and breeding, chiefly for economic reasons, such as selling their wool, meat, and other products.

(b) Shearing refers to the removal of fleece along with the thin dead layer of the sheep skin.

(c) Sericulture is an economical process that involves rearing silkworms, in order to obtain silk fibres from their cocoons.

Question: 5

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

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

Solution:

Scouring, removing burrs, dyeing, rolling into 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.

Solution:

The two stages in the life history of the silk moth that are directly related to silk production:

(a) The early cocoon stage involves spinning of cocoon made of silk threads around the caterpillar or larva.

(b) In the late cocoon stage, the caterpillar changes into a pupa inside the cocoon.

Question: 7

Out of the following, which are the two terms related to silk production?

Sericulture, floriculture, moriculture, apiculture and silviculture.

Hints:

(a) Silk production involves cultivation of mulberry leaves and rearing silkworms.

(b) Scientific name of mulberry is Morus alba.

Solution:

Sericulture and Moriculture

Question: 8

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

Solution:

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	Across
1: Thorough washing	1: Keeps warm
2: Animal fibre	2: Its leaves are eaten by silkworms
3: Long thread like structure	3: Hatches from egg of moth

Solution: