Question

Mention the stage in which silk fibres are obtained.

7th cbse NCERT​

Answer 1

female silk moth lays eggs and then the larvae are hatched out of eggs known as caterpillars. they grown size and they enter in second stage called as pupa where they secrete fibre made up of preteen which when comes in contact of air and it hardens to become as silk fibreThe caterpillar or larvae are hatched from the eggs of the silk moth. The silkworms feed on mulberry leaves and give rise to pupa. In the pupa stage, a weave is netted around by the silkworm to hold itself. After that it swings its head, spinning a fibre made of a protein and becomes a silk fibre.