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Grade: 11
        Which one of the following is categorised as a parasite in true sense?

1. The cuckoo (koel) lays its egg in crow's nest
2. The female Anopheles bites and sucks blood from humans
3. Human foetus developing inside the uterus draws nourishment from the mother
4. Head louse living on the human scalp as well as laying eggs on human hair
5 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
471 Points
							Sol:     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 as a parasite, though it needs human
            blood for reproduction. Koel that lays in crow's nest is just a brood parasite.
            Answer: (4)

						
5 years ago
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