The stage at which implantation occurs is

Trophoblast

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Blastocyst

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Blastocoel

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Blastopore

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Solution

The correct option is B
Blastocyst

Once fertilisation has occurred, the zygote undergoes repeated mitotic divisions, and soon reaches the uterus. By this time, it has formed a hollow ball of numerous cells called the blastocyst. It forms a pit in the endometrial lining of the uterus and gets implanted.

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Similar questions

The stage of development at which implantation occurs in human female is

A	Zona hatching	(i)	mitotic division of the zygote
B	Trophoblast	(ii)	embedding of the blastocyst in the endometrium
C	Cleavage	(iii)	blastocyst releasing from zona pellucida
D	Implantation	(iv)	outer layer of blastocyst attached to the endometrium

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