Which of the following is correct about the blastocyst?

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Penetrates endometrium from its embryonic pole.

Consists of outer trophoblast and inner embryoblast.

Gets implanted along with zona pellucida.

Has a cavity called amniotic cavity.

answer is B.

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Detailed Solution

The blastocyst becomes embedded in the endometrium of the uterus. This is called implantation and it leads to pregnancy. The blastomeres in the blastocyst are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass.

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