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The silkworm silk is the product of

1. cuticle of the larva
2. cuticle of the adult
3. salivary gland of the larva
4. salivary gland of the adult

Correct answer: salivary gland of the larva

Solution

Silkworm silk is produced by the larval stage, where specialized salivary glands secrete the silk proteins. The adult moth does not produce silk for cocoon building.

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