AIPMT MAINS2009Zoology-Human Reproduction
AIPMT MAINS 2009 Zoology Menstrual Cycle MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female?
A
maintenance of the hypertrophical endometrial lining
B
maintenance of high concentration of sex hormones in the blood stream
C
retention of well-developed corpus luteum
D
fertilisation of the ovum
Correct Answer
Option D
Detailed Explanation
Menstruation does not occur if the ovum is fertilized, as the endometrial lining is maintained to support the developing embryo.
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