In which of the following insects, a pigment called luciferin is found?

Q. In which of the following insects, a pigment called luciferin is found?
Answer: Firefly
Notes: A pigment called luciferin is found in firefly. Luciferin is a light-emitting compound which is found in organisms that generate bioluminescence. Luciferins typically undergo an enzyme-catalyzed reaction with molecular oxygen.

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