Question

Explain the process of development in human beings.

Answer 1

Development:

• Fertilisation results in the formation of zygote.
• The zygote divides and redivides to form a ball of cells called blastocyst.
• The blastocyst gets implanted on the wall of the uterus and forms the embryo.
• The embryo obtains all the nourishment and oxygen from the mother’s blood.
• A structure called placenta present in the uterus supplies all the necessary nutrients to the embryo through the umbilical cord.
• The development of the foetus takes place for nine months