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What are the finger-like projections of trophoblast called?

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What are the finger-like projections of trophoblast called?

(a) Endometrium

(b) Placenta

(c) Chorionic villi

(d) Fetus

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This interesting question is from Human Reproduction in section Human Reproduction of Biology – Class 12

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Right option is (b) Placenta

Easiest explanation: The trophoblast of the blastocyst sends finger-like projections into the uterine cell wall to derive nutrition. These projections are called chorionic villi.

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