Question

Explain the process of development of an embryo from a zygote

Answer 1

Answer: In animals, the zygote is formed as soon as the sperm and egg fuse to form a diploid cell that has received half of its DNA from each parent. ... During this time, the zygote becomes a ball of cells called a blastocyst. When the blastocyst reaches the uterus, it implants in the uterine wall and is then called an embryo.

Answer 2

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$\implies$After fertilization, the zygote moves down the oviduct and divides repeatedly to form a ball of cell. This structures called an embryo. The embryo reaches the uterus and gets embedded In the wall of the uterus. This is called implantation. Further development of the embryo takes place here.

The embryo gradually develops different body parts such as hands, legs, head, eyes, ears, etc. The stage of the embryo when all the body parts can be identified is called a foetus.

A growing embryo (foetus) obtain nourishment from the mother's body through the placenta and the umbilical cord.

When the development of the foetus is completed, the mother gives birth to the baby.

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