Question

List two reasons that make copper releasing IUDs as effective contraceptives.

Explain how the intake of oral contraceptive pills prevent pregnancy in humans.

Assertion (A) : Male contraceptive 'Nirodh' works on the principle of avoiding chances of ovum and sperm meeting. Reason (R) : It is made of thin rubber/latex sheath and is used to cover the penis before coitus.

A village health worker was taking a session with women. She tells them that one has to be careful while using oral pills as a method of birth control. Wrong usage can actually promote conception. (a) Analyse the above statement and compare the merits and demerits of using oral pills and surgical methods of birth control. (b) Village women are confused as to how a thin metallic copper loop can provide protection against pregnancy. Explain the mode of action of IUDs. Give two points.