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Fibre from Animals

Silk moths sp...

Question

Silk moths spin silk at the stage of
(a) egg
(b) larvae
(c) pupa
(d) none of these

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Solution

(b) larvae

After the process of moulting, the larva begins vigorous eating and undergoes rapid growth. Then, it stops eating and shakes it head to secrete a fibre made of protein. With time, the fibre gets hard and turns into silk.

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Q. Silk fibre is obtained from the larva of a silk moth.

Q. The larvae that hatch from the eggs of a silk moth are known as .

Q. The resting stage of the caterpillar is
(a) larva.
(b) moulting.
(c) pupa.
(d) adult moth.

Larva which hatches from the egg of the silk moth is called:

Q. Steps for the production of silk are given below in a jumbled order. Arrange them in proper sequence.
(a) Eggs are warmed to a suitable temperature for the larvae to hatch from eggs.
(b) Fibers are taken out from the cocoons.
(c) After 25 to 30 days, the caterpillars stop eating and start spinning cocoons.
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(e) Female silk moths lay eggs.
(f) Cocoons are kept under the sun or boiled in water.

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