Which of the following is NOT obtained from insects?

The correct answer is D, Pearl. Pearls are not insect products. They are formed by molluscs such as oysters and pearl mussels, which secrete nacre (mother-of-pearl) from their mantle around an irritant to coat it in layers.

The other three are all insect-derived:

• Silk: Obtained from the larvae of Bombyx mori, the mulberry silkworm, in sericulture. India is among the world's largest silk producers.
• Honey: Produced by honeybees of the genus Apis. Apiculture is promoted through the National Bee Board under the Ministry of Agriculture and Farmers Welfare.
• Lac: A resinous secretion of the scale insect Kerria lacca. India is the leading lac producer, and the crop is a forest-based livelihood in Jharkhand and Chhattisgarh.

This sits within the broader Economy and Environment theme of 'animal products and allied livelihoods', which often appears in Mains as a question on rural income diversification.

Trap: Aspirants sometimes treat 'natural fibre' or 'sea product' as a shortcut and pick silk or pearl without checking the biological source.