NEET 2010 Biology question

Cu ions released from copper-releasing Intra Uterine Devices (IUDs)

(1)increase phagocytosis of sperms
(2)suppress sperm motilityCorrect
(3)prevent ovulation
(4)make uterus unsuitable for implantation

Answer: (2)

Solution

Copper ions released by Cu-T, Cu-7 and Multiload 375 suppress sperm motility and the fertilising capacity of sperms. So (2) is correct. Increased phagocytosis of sperms (1) is the action of non-medicated IUDs such as the

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Question ID VK-090590