Why are the cocoons transferred to boiling wate
before the pupa develops into an adult ?where is the answer
Answers
Answer:
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Explanation:
1. Cocoons are Placed in boiling water to get smooth & continious thread from it. There is a chain of method in manufacturing Silk from Cocoons. ... The cocoons are put on steam (Hot boiling water Vapours) to soften the Cocoons Upper Layers and Kill the larvae (Silk Worm) & can be stored as is for more than 10 days.
2. 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.
The cocoons transferred to boiling water before the pupa develops into an adults because :-
1.The silk gum or sericin on the cocoon filaments keeps them together in the shell 2.To softened with hot water and steam
3.The filament can be wound on the reel without entaglement
4.They also placed in worm water to kill the worm and make it easy to unwrap the silk threads