NEET Biology question

Which of the following approaches does not give the defined action of the contraceptive against it? [NEET-I 2016]

(A)Hormonal contraceptives - Prevent entry of sperms, prevent ovulation and fertilisation
(B)Vasectomy - Prevents entry of sperms, prevents ovulation and fertilisationCorrect
(C)Barrier methods - Prevent fertilisation, increase phagocytosis of sperms, sperm motility and fertilizing capacity of sperms
(D)Intra uterine devices - Increase phagocytosis of sperms, suppress sperm motility and fertilizing capacity of sperms

Answer: (B)

Solution

Vasectomy works purely by surgically blocking the vas deferens so that the ejaculate contains no sperm, not by the ovulation/fertilisation-related mechanisms

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Question ID VK-118954