Question

In the given figure which marked number (1, 2, 3, 4) is tied and cut to block fertilisation.
 

A. 1
B. 2
C. 3
D. 4

Answer 1

Hint: A vasectomy is a surgical procedure that renders a male sterile or naturally contraceptive. Therefore, the male who has this vasectomy operation is unable to reproduce by having sex with a woman to have children.

Complete Step by Step Answer:
As we can see that the given diagram is of a male reproductive system, so the part which is tied in the given diagram is the vas deferens.
The male vas deferens is cut from the urethra and knotted during this vasectomy procedure. The epididymis continues the vas deferens, which originates in the male prostate gland. The sperm that is created in the testis travels to the prostate gland, where it receives nutrition and is stored until it is needed for reproduction. The sperm from the prostate gland travels to the epididymis and then through the vas deferens when it is time to reproduce. The sperm and prostate fluid, collectively referred to as semen, then proceed down the urethra to fertilise. The vas deferens is tied during a vasectomy, preventing the sperm from reaching the urethra and preventing conception. The sperm in the semen accumulates in the epididymis before slowly vanishing.
And if we try to locate in the diagram, then, (1) is being shown in place of vas deferens.
Hence, the correct option is A. 1

Note: Vasectomy is considered as a contraceptive with almost zero percent failure chances. But, the chances of reversibility are almost zero and this method of contraception does not provide couples with privacy.