Question

How do IUDs prevent pregnancy?

(a) By preventing mixing of vaginal and seminal fluids

(b) By increasing phagocytosis of sperms

(c) By increasing phagocytosis of eggs

(d) By preventing the release of egg

I had been asked this question by my school principal while I was bunking the class.

I need to ask this question from Reproductive Health topic in portion Reproductive Health of Biology – Class 12

Answer 1

Correct choice is (b) By increasing phagocytosis of sperms

The explanation: IUDs are intrauterine devices. They do not act as a barrier between vaginal and seminal fluids. Also, they do not affect the ovary or the egg. They work by enhancing the phagocytosis of sperms and thus reducing the probability of sperm entering the fallopian tube to fertilize the egg.