Question

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

• A. The cuckoo lays its egg in crow's nest
• B. The female Anopheles bites and sucks blood from humans
• C. Human foetus developing inside the uterus draws nourishment from the mother
• D. Head louse living on the human scalp as well as laying eggs on human hair

Answer 1

The correct option is D

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

Head louse living on the human scalp as well as laying eggs on human hair is a parasite in true sense. Female mosquito is not considered a parasite, as it needs human blood only for reproduction. Cuckoo that lays eggs in crow's nest is a brood parasite not a parasite in true sense.