Question

Describe how silk fibre is obtained from the coccon

Answer 1

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The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).

Cocoon, Silkworm. the casing formed by the caterpillars of silkworms before metamorphosis into a pupa; the raw material for obtaining natural silk. ... The cocoons selected for reeling are treated with hot air or steam to kill the pupa and prevent its metamorphosis into a moth, which damages the cocoon as it emerges.

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.

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Answer 2

The protein fiber of silk is composed mainly of fibroin and is produced bycertain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).