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In blastula stage, trophoblast layer attach to the endometrium with the help of-

Option: 1

Uterine villi


Option: 2

Blastopore


Option: 3

Chorionic villi


Option: 4

Archenteron


Answers (1)

best_answer

In blastula stage, trophoblast layer attach to the endometrium with the help of chorionic villi. Chorionic villi is formed by the trophoblast layer and will attach to the uterine villi and complete implantation. Chorionic villi will increase surface area for absorption of nutrition.

Option c is the correct answer.

Posted by

vishal kumar

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