Which of the species of $Mycoplasma$ causes human sterility?

Which of the following methods involves $In \, vivo$ fertilization?

What are the techniques used to diagnose infertile couples and assist them in having children through appropriate treatment called?

$A$ woman who substitutes or takes the place of the real mother to nurse the embryo is called

Match the columns:

Column $1$	Column $2$	Column $3$
$(a) ZIFT$	$(p) ART$ method	$(w)$ Ovum and sperm in fallopian tube
$(b) ART$	$(q) ZIFT$	$(x)$ Embryo with more than $8$ blastomeres in uterus
$(c) GIFT$	$(r) IVF$	$(y)$ Embryo with up to $8$ blastomeres in fallopian tube
$(d) IVF$	$(s) GIFT$	$(z)$ Ovum transfer into fallopian tube

Difference between $ZIFT$ and $IUT$ lies in the