Fibre to Fabric (Practice Sheet,Class 7)

(1)Fill in the blanks:

(i)Yak gives us ……….   .

(ii)The rearing of silkworms for obtaining silk is called  …… .

(iii)Caterpillars eat ……. leaves.

(iv)After   …….  days caterpillar stops eating and move to a tiny chamber of bamboo in the tray to spin cocoons.

Solution-

(2) Name the following:

(i) larvae’s other name.

(ii) Wool producing animal.

(iii) Wool producing state in India.

Solution-

(3) What is the process of rearing of silk worm?

Solution-

(4) What do you understand by “selective breeding’?

Solution-

(5)Match the items from the column I to column II.

     Column I                                                             Column II

(i) Yak                                                                          Silk

(ii) Silkworm                                                              Wool

(iii) Tussar                                                                  Caterpillar

Solution-

(6)What is the life history of silk moth?

Solution-

(7) Write `T’ if statement is correct and write `F’ if statement is wrong.

(i)Silk fibres are made of a protein.

(ii)The process of taking out threads from the cocoon for use as silk is called sericulture.

(iii) Yak gives us wool.

Solution-

Choose the correct answer.

(8) The most common silk moth is the

(i) mulberry silk moth

(ii) tassar silk moth

(iii) mooga silk moth

Solution-

(9)The rearing of silkworms for obtaining silk is called

(i) sericulture

(ii) tericulture

Solution-

(10)Which part of yak or sheep is used to make wool?

(i) fleece

(ii) leg

(iii) horns

Solution-

Helping Topics

Fibres and plastic

Some Indian breeds of sheep

Wool producing animals in India

Burning smell of different fibres

Choping off hair of sheep for getting wool

NCERT Solutions, class 7

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