Identify the figure given below and the part labelled ?A.?

Dear student,

Ans. A is the Inner cell mass
The cells in the blastocyst are arranged into an outer called trophoblast and an inner cell mass called
embryoblast or pluriblast. 

• Trophoblast is an outer layer of the blastocyst stage of embryo that plays a crucial role during implantation and placentation. The cells of trophoblast layer are the first to form from fertilised egg and provide nutrition to the embryo.
• The mass of cells present inside the trophoblast layer that differentiates to form the embryo is called inner cell mass. It is attached to the trophoblast.

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