Previous year MCQs

General science UPPSC 2018 GS-I
Question

Which of the following is NOT obtained from insects?

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Pearl

Detailed Solution:

The correct answer is “Pearl”.
Pearl is not obtained from insects. Pearls are formed in the soft tissues of oysters and other marine mollusks.

They are created when a foreign object, such as a grain of sand, becomes lodged in the mollusk's body. The mollusk then secretes a substance called nacre to coat the irritant, eventually forming a pearl.

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