Page 29 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

8. The fleece are combed to remove ...................... .

(a) Burrs (b) Dust (c) Low quality hair (d) None of these
Ans. (c)

B. Fill in the blanks.
1. Silk fibres are obtained from the cocoons of ...................... .
Ans. silkworms

2. The chief component of ...................... is protein.

Ans. animal fibres
3. ...................... weaves silk threads into silk cloth.
Ans. A weaver

4. Kashmiri goat’s under-fur is woven to form fine shawls called ...................... .
Ans. Pashmina

5. The breed of sheep from Spain that gives us fine wool is ........................ .
Ans. Merino sheep

6. ................... animal fibre is naturally elastic.
Ans. Spider silk

7. Silkworms feed on ....................... leaves.
Ans. mulberry

C. State whether the following statements are true (T) or false (F).
1. Silk is a natural fibre.

2. The fur on the body of a camel is used as wool.
3. A female silk moth lays one egg at a time.
4. Caterpillars should be collected with bare hands.

5. Silk is obtained from the silk moth at the caterpillar stage.
6. Sorter’s disease is associated with the intestine.

7. The cocoons are put in boiling water to reel the silk.
8. Llamas in Indonesia are bred for their wool.

Ans. 1. (T) 2. (T) 3. (F) 4. (F) 5. (F) 6. (T) 7. (T) 8. (F)
D. Match the following.

Column A Column B
1. Scouring (a) Pashmina shawls

2. Cocoon (b) Yields silk fibres
3. Yak (c) Wool yielding animal

4. Mulberry leaves (d) Food of silkworm
5. Angora goat (e) Cleaning sheared skin

Ans. 1. (e) 2. (b) 3. (c) 4. (d) 5. (a)

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