| Assertion(A): | Corpus luteum degenerates if the ovum remains unfertilized |
| Reason(R): | Corpus luteum secretes progesterone which maintains the pregnancy |
| 1. | Both (A) and (R) are True and (R) is correct explanation of (A) |
| 2. | Both (A) and (R) are True and (R) is not correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
| 1. | It is characterized by high levels of progesterone. |
| 2. | The corpus luteum secretes estrogen. |
| 3. | The endometrium becomes thick and vascularized. |
| 4. | LH and FSH levels peak during this phase. |
| 1. | Luteinizing hormone (LH) |
| 2. | Follicle-stimulating hormone (FSH) |
| 3. | Human chorionic gonadotropin (hCG) |
| 4. | Progesterone |