Question

The incorrect statement about placenta is: (A) It is a disc embedded in the uterine wall. (B) It connects the embryo to the side of the uterus. (C) It has a very small surface area for glucose and oxygen to pass from mother to embryo. (D) It secretes hormones for maintaining pregnancy.

• A. It is a disc embedded in the uterine wall.
• B. It connects the embryo to the side of the uterus.
• C. It has a very small surface area for glucose and oxygen to pass from mother to embryo.
• D. It secretes hormones for maintaining pregnancy.

Answer 1

The Correct Option is C

Step 1: Understand the role of placenta
The placenta is a vital organ that forms during pregnancy. It connects the developing embryo (or fetus) to the uterine wall of the mother.

Step 2: Evaluate the given statements
(A) It is a disc embedded in the uterine wall – ✔️ True. The placenta is disc-shaped and attached to the uterus.
(B) It connects the embryo to the side of the uterus – ✔️ True. The placenta links the fetus to the mother’s uterine wall via the umbilical cord.
(C) It has a very small surface area for glucose and oxygen to pass from mother to embryo – ❌ Incorrect. The placenta actually has a large surface area to efficiently exchange nutrients, gases (like oxygen), and wastes between mother and fetus.
(D) It secretes hormones for maintaining pregnancy – ✔️ True. The placenta produces hormones like progesterone and human chorionic gonadotropin (hCG) to support pregnancy.

Step 3: Conclusion
The incorrect statement is:
It has a very small surface area for glucose and oxygen to pass from mother to embryo.