Environmental Sciences, asked by charanjot2718, 11 months ago

The silk fibre is obtained from the covering of pupa known as

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Answered by fahaam21
20

the covering is known as cocoon

Answered by Anonymous
10

During these movements of head, the caterpillar secretes fibre made of a protein which hardens on exposure to air and becomes silk fibre. The caterpillar completely covers itself by silk fibres and turns into pupa. This covering is known as Cocoon. Silk fibres are used for weaving silk cloth.

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