Question

Assertion (A): Finger-like projections appear on the trophoblast called chorionic villi after implantation.

Reason (R): Chorionic villi are surrounded by the uterine tissue and maternal blood.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

Explanation:

Chorionic villi develop on the trophoblast after implantation and are surrounded by uterine tissue and maternal blood. The reason describes their surroundings, not why the projections appear.