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(C) During human embryonic development,the blastocyst consists of an outer layer of cells called the trophoblast and an inner group of cells attached

Vedclass · Accepted Answer

Body of developing embryo

Vedclass · Answer

(C) During human embryonic development,the blastocyst consists of an outer layer of cells called the trophoblast and an inner group of cells attached to it called the inner cell mass. The trophoblast layer helps in the attachment of the blastocyst to the endometrium and eventually forms the chorionic villi and the foetal portion of the placenta,as well as protective and trophic membranes. The body of the developing embryo is formed exclusively by the inner cell mass.

The trophoblast is not involved in the formation of:

Similar Questions

Statement-$I$: The trophoblast layer gets attached to the endometrium and the inner cell mass gets differentiated as the embryo.
Statement-$II$: The morula becomes embedded in the endometrium of the uterus.

Variations in the amount and distribution of yolk in an egg affect which of the following?

Who first observed the process of fertilization in sea urchins?

Polyspermy is common in which of the following?

Fertilization is

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