Which of the following does not give the defined action of contraceptive?

Barrier methods – prevent fertilization

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Intra uterine devices – suppress sperm motility

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Hormonal contraceptive pills – prevent ovulation

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Vasectomy – prevents spermatogenesis

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Solution

The correct option is D Vasectomy – prevents spermatogenesis
Vasectomy is a surgical procedure for male sterilization or permanent contraception. During the procedure, the male vas deferens are severed and then tied or sealed in a manner so as to prevent sperm from entering into the urethra and thereby prevent fertilization. It does not prevent spermatogenesis.

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\begin{matrix} M e t h o d & M o d e o f A c t i o n (1) & T h e p i l l & P r e v e n t s s p e r m s r e a c h i n g c e r v i x (2) & C o n d o m & P r e v e n t s i m p l a n t a t i o n (3) & V a s e c t o m y & P r e v e n t s o v u l a t i o n (4) & C o p p e r - T & S e m e n c o n t a i n s n o s p e r m s \end{matrix}

\begin{matrix} M e t h o d & M o d e o f A c t i o n (1) & T h e p i l l & P r e v e n t s s p e r m s r e a c h i n g c e r v i x (2) & C o n d o m & P r e v e n t s i m p l a n t a t i o n (3) & V a s e c t o m y & P r e v e n t s o v u l a t i o n (4) & C o p p e r - T & S e m e n c o n t a i n s n o s p e r m s \end{matrix}

	Method		Mode of Action
A.	Oral pill	(i)	Prevents sperms reaching cervix
B.	Condom	(ii)	Prevents fertilisation
C.	Vasectomy	(iii)	Prevents ovulation
D.	Copper T	(iv)	Semen contains no sperms

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