NEET Zoology Menstrual Cycle MCQ Question
Which of the following statements about the menstrual cycle is correct?
The menstrual phase lasts 3-5 days and involves the breakdown of the endometrial lining.
Ovulation occurs at the beginning of the luteal phase.
The release of the ovum is triggered by a decrease in LH levels.
Menstruation occurs regardless of whether the ovum is fertilized or not.
Correct Answer
Detailed Explanation
The menstrual phase indeed lasts for 3-5 days and is characterized by the breakdown of the endometrial lining, as mentioned in the NCERT context. Options B and C are incorrect as ovulation occurs during the follicular phase, and LH levels peak to induce ovulation. Option D is misleading as menstruation occurs only if the ovum is not fertilized.
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