$A$: Gossypol inhibits spermatogenesis.
$R$: Centchroman inhibits ovulation.

$IUDs$ are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about $IUDs$?
$(a)$ $IUDs$ decrease phagocytosis of sperm within the uterus.
$(b)$ The released copper ions suppress the sperm motility.
$(c)$ $IUDs$ do not make the cervix hostile to the sperm.
$(d)$ $IUDs$ suppress the fertilization capacity of sperm.
$(e)$ The $IUDs$ require surgical intervention for their insertion in the uterine cavity.
Choose the most appropriate answer from the options given below:

Possible ill-effects of hormonal methods for contraception are:

Which of the following methods does not function as a contraceptive?

Find out the correct statement.
$I$. Pills prevent ovulation during use as a contraception technique.
$II$. Copper-$T$ prevents implantation.
$III$. Vasectomy produces semen containing no sperm.

Match the following columns:

Column-$I$	Column-$II$
$A$. Pill	$1$. Intra uterine device
$B$. Condom	$2$. Prevents ovulation
$C$. Vasectomy	$3$. Prevents sperms from reaching to cervix
$D$. Cu-$T$	$4$. Semen contains no sperms