In this method,a sperm is directly injected into the ovum in the laboratory.

In the process of $in \, vitro$ fertilization, if an embryo with more than $8$ blastomeres is transferred into the uterus for further development, what is this method called?

If a male is unable to produce semen containing an adequate number of sperm,which $ART$ method can be used?

What temperature is maintained in cryopreservation (in $^{\circ} \text{C}$)?

$IVF$ in which zygote with $A$ than $8$ blastomeres is transferred into the female body is called $B$.

Give differences between the $ZIFT$ method and the $GIFT$ method.