Question

(d) In sericulture, cocoons are transferred to boiling water before the pupa develops.​

Answer 1

Explanation:

Silk is produced by silk worms when making their cocoons. To get the silk from the cocoons at the optimum time, before the worm makes a hole in the cocoon reducing it's value, they are placed in boiling water to kill the worm and make it easier to unwrap the silk threads.

Answer 2

Answer:

$hope \: its \: helpful$