Question

b.
When does a silkworm produce silk fibre?​

Answer 1

Explanation:

This stage is often referred to as the sleeping stage of the silkworm. Usually, in 12 to 15 days, Pupa becomes a silkworm (Imago) by transplantation, which, with the help of an alkaline secretion cut the Koya from one side and comes out. This makes the silk thread of Koya broken into small pieces.

Answer 2

Answer:

Silkworms are the offspring of moths . They spew out thread from tiny holes in their jaws, which they use to spin into their egg-bearing cocoons. This entire production takes a mere 72 hours, during which time they produce between 500-1200 silken threads.

I hope my answer will help you.