Silk moth covers itself completely with silk fibre during larval stage. This covering is known as __.

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Solution

The larvae of the silk moth spin the silk thread around themselves. This covering is known as a cocoon which is generally made up of proteins. The pupa continues to develop within the cocoon. The silk thread or yarn is obtained from the silk moth’s cocoon.

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Question 21

Complete the paragraph related to the life history of silk moth by filling in the blanks.

The (a) ___ silk moth lays (b) ___, from which hatch (c) ___ called (d) ___ or (e) ___. They grow in size and when the caterpillar is ready to enter the next stage of its life history called (f) ____, it first weaves a covering to hold itself, which is known as (g) ____.

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