Through amniocentesis,foetal cells can be cultured and tested for detecting various diseases of the foetus by:

Sex determination using Barr bodies is possible through which of the following methods?

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Copper releasing $IUD$	$(1)$ Diagnosis of chromosomal abnormalities
$(b)$ Hormone releasing $IUD$	$(2)$ Saheli
$(c)$ Pills	$(3)$ $LNG-20$
$(d)$ Amniotic fluid test	$(4)$ Multiload-$375$

Match the following columns:

Column-$I$	Column-$II$
$P$. Vasectomy	$I$. Natural method
$Q$. Condom	$II$. Sterilization
$R$. Multiload $375$	$III$. Barrier method
$S$. Periodic abstinence	$IV$. Intrauterine device $(IUD)$

Match the columns $:$

Column-$I$	Column-$II$
$(A)$ Condoms	$(I)$ blocks gamete transport
$(B)$ $\text{IUDs}$	$(II)$ once a week pill
$(C)$ Sterilisation	$(III)$ increase phagocytosis of sperm
$(D)$ Saheli	$(IV)$ Latex sheath

Correct the following statements:
$(a)$ Surgical methods of contraception prevent gamete formation.
$(b)$ All sexually transmitted diseases are completely curable.
$(c)$ Oral pills are very popular contraceptives among the rural women.
$(d)$ In $E.T.$ techniques, embryos are always transferred into the uterus.