Question

structure formed after the fertilization of ovum by the sperm​

Answer 1

THE ANSWER IS:-

Zygotic stage: The zygote is formed when the male gamete (sperm) and female gamete (egg) fuse. Blastocyst stage: The single-celled zygote begins to divide into a solid ball of cells. Then, it becomes a hollow ball of cells called a blastocyst, attaching to the lining of the mother's uterus.

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Answer 2

Answer:

Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote.