Question

why is necessary to kill the pupae by boiling cocoons in water​

Answer 1

Answer:

hii there mate,

it is neceesary to kill pupae as trying to unwrap the silk from a living pupa that hadn't completed the pupal stage would also likely kill it. Boiling water kills the pupae quickly, while making the silk easier to unwind.

Answer 2

Answer:

because heating gives better silk

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