Which one of the following is categorized as a parasite in …

Biology Organisms and Populations Previous Year Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Which one of the following is categorized as a parasite in true sense?

Human foetus developing inside the uterus draws nourishment from the mother.

Head louse living on the human scalp as well as laying eggs on human hair.

The cuckoo (koel) lays its eggs in crew’s nest.

The female Anopheles bites and sucks blood from humans.

Text Solution

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The correct answer is:

This is a true parasite because it lives on the host (ectoparasite), derives nourishment, and depends on the host for survival.

Foetus → not a parasite (natural physiological relationship)

Cuckoo → brood parasitism (not true parasitism)

Mosquito → temporary parasite (not permanent)

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