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

A Hormonal contraceptives \(-\) Prevent/retard entry of sperms, prevent ovulation and fertilisation
B Vasectomy \(-\) Prevents spermatogenesis
C Barrier methods \(-\) Prevents fertilisation
D Intra uterine devices \(-\) Increases phagocytosis of sperms, suppress sperm motility and fertilising capacity of spermS

Verified Solution

Answer & Solution

Correct Answer

(B) Vasectomy \(-\) Prevents spermatogenesis

Step-by-step Solution

Detailed explanation

(b) : Vasectomy is a sterilisation technique for the males in which a small part of the vas deferens is removed or tied up through a small cut on the scrotum to prevent passage of sperms. Spermatogenesis is the series of cell division in the testis that results in the production of spermatozoa or sperms.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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