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Q.
A vestigial organ of man is
Chhattisgarh PMTChhattisgarh PMT 2004
Solution:
Vestigial organs are non-functional organs in an organism, which are functional in related animals and were functional in the ancestors. There are $90$ vestigial organs in the human body and mainly include coccyx (tail bone), nictitating membrane ($3^{rd}$ eyelid), caecum, vermiform appendix, canines, wisdom teeth, body hair, auricular muscles, mammary glands in males etc.