Question

What is fertilisation? What
Structure is formed after
fertilisation?​

Answer 1

Answer:

As a fertilized human egg divides, it first becomes a solid ball of cells, the morula. Next, about five days after fertilization, it becomes a hollow ball, the blastocyst. The cells of the outer layer of the blastocyst eventually form part of the placenta. ... The basic structure of the placenta forms in about three weeks.

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Answer 2

Answer:

Fertilization is the fusion of male and female reproductive cells known as Gamete which results in formation of zygote which gets divided to form embryo.