NEET Biology question

Which one of the following is the most likely root cause why menstruation is not taking place in a regularly cycling human female?

(A)Maintenance of the hypertrophical endometrial lining
(B)Maintenance of high concentration of sex-hormones in the blood
(C)Retention of well-developed corpus luteum
(D)Fertilisation of the ovumCorrect

Answer: (D)

Solution

The most common underlying reason for a previously regularly cycling female to stop menstruating is pregnancy, initiated by fertilisation of the ovum, which

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Question ID VK-122107