Catterpillar of silkworm secretes fibre
made up of
Calcium
Iron
Fat
Protein
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Answer:
Protein
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Answer:
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).
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