Silk fibres are. Formed of Protein keratin Protein sericin
Protein elastin
Chitin
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Silk fibres are. Formed of Protein keratin Protein sericin
Protein Silk fibres are. Formed of Protein keratin Protein sericin
Protein elastin
Chitin
Chitin
the silk fibre to harden after the silk fibre to harden after its secretion the silk fibre to harden after its secretion by the caterpillar the caterpillar secretion by the caterpillar
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1
Answer:
protein keratin is right answer
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