If juvenile hormone is absent when silkworm moults, it will

Moult into another larval stage

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Moult into pupa

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Moult into adult

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None of the above

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Solution

The correct option is A Moult into pupa
Juvenile hormone is the type of hormone in insects that regulates the physiology of growth and development, reproduction, diapause, and polyphenisms. In silkworm, this hormone ensures the growth of larva and prevents the metamorphosis. So, if this hormone is absent during moulting, it will moult into a pupa.
Therefore, the correct answer is option B.

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