Q.

Identify A and B from the given diagram and choose the correct option.

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a

A - Morula ; B - Blastocyst

b

A - Blastocyst ; B - Morula 

c

A - Gastrula ; B - Morula 

d

A - Blastocyst ; B - Gastrula

answer is A.

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Detailed Solution

A - The solid, ball-like embryo with 8 to 16 blastomeres is called morula.

B - The blastocyst has a cavity. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and an inner group of cells called the inner cell mass.

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