Question

IVF involves transfer into fallopian tube of

• A. Embryo only upto 8-celled stage
• B. Zygote or embryo upto $8$-celled stage
• C. Zygote only
• D. $32$-celled stage

Answer 1

The correct option is B Zygote or embryo upto $8$-celled stage

In vitro fertilisation (IVF)
The technique of in vitro fertilisation (IVF) involves combining a woman’s eggs (retrieved) and man’s sperm outside the body in the laboratory.
The zygote or embryo formed in vitro is transferred into the woman’s fallopian tube (zygote intrafallopian transfer) or uterus (intrauterine transfer) respectively for further development of the foetus.
Hence, this technique will help a female have a baby who cannot conceive.

Final answer
$\left(a\right)$ Zygote or embryo upto 8-celled stage