Question

In human beings, the foetal placenta is derived from ______.

• A. allantois
• B. chorion
• C. primary yolk sac
• D. amnion

Hint:

Chorionic villi increase surface area for maternal–foetal exchange.

Answer 1

The Correct Option is B

Step 1: Understanding placenta formation.
The placenta is a temporary organ that facilitates exchange of nutrients, gases, and wastes between mother and foetus.
Step 2: Foetal contribution.
The foetal part of the placenta develops from the chorion, which forms chorionic villi.
Step 3: Conclusion.
Hence, the foetal placenta is derived from the chorion.