Question

Assertion (A): At the end of pregnancy, placenta secretes a hormone called relaxin.

Reason (R): Relaxin keeps the levels of oestrogen and progesterone high necessary to maintain pregnancy.

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

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

Explanation:

The placenta secretes relaxin near the end of pregnancy, helping soften pelvic connective tissue and dilate the cervix. hCG, not relaxin, maintains the corpus luteum and thereby supports high oestrogen and progesterone levels early in pregnancy.