Question

Which structure undergoes division forming a blastocyst?

Answer 1

Blastocyst:

1. The fertilized egg by the sixth day is known as a blastocyst.
2. It contains 200-300 cells.
3. It is a rapidly dividing ball of cells.
4. It is a thin-walled hollow structure from which an embryo arises.
5. The zygote undergoes mitotic divisions to form a blastocyst, when it is implanted in the uterus it leads to pregnancy.

Zygote:

1. Fertilized egg cell that results from the union of female gamete with male gamete.
2. Zygote undergoes development into an embryo and fetus.