The solid mass of cells formed at the end of cleavage of mammalian egg is

In sexually reproducing animals the union of male and female gamete forms a cell which is called

Choose the correct pair -

The point of sperm entry during fertilization forms

Identify the human developmental stage shown below as well as the related right place ofits occurrence in a normal pregnant woman, and select the right option for the two, together.

Fertilization is depicted by the condition