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    Question

    The silk fibres are held together in cocoon by a

    substance known as ______________.
    A Sericin Correct Answer Incorrect Answer
    B Cement Correct Answer Incorrect Answer
    C Glue Correct Answer Incorrect Answer
    D Fibroin Correct Answer Incorrect Answer
    E None Correct Answer Incorrect Answer

    Solution

    The silk fibres are held together in cocoon by a substance known as sericin which is secreted by middle gland of the salivary gland (silk glands) of silk worm.

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