Which structure prevents the mixing of blood between mother and fetus?

Practice MCQ for SSC, UPSC, RRB Exams

A. Placenta A.
B. Umbilical cord B.
C. Amniotic sac C.
D. Endometrium D.

Correct Answer: A সঠিক উত্তর: A

Explanation ব্যাখ্যা

The placenta acts as a selective barrier and facilitates exchange without mixing blood directly.

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