NEET Zoology Menstrual Cycle MCQ Question
Which of the following statements about the menstrual cycle is correct?
Menstruation occurs when the released ovum is not fertilized and results from the breakdown of the endometrial lining.
The luteal phase is characterized by a decrease in progesterone levels which leads to menstruation.
Ovulation is triggered by a decrease in gonadotropin levels, specifically LH and FSH.
The follicular phase begins after ovulation and is marked by the transformation of the corpus luteum.
Correct Answer
Detailed Explanation
Menstruation occurs when the released ovum is not fertilized, leading to the breakdown of the endometrial lining, as stated in the NCERT context. The other options contain inaccuracies regarding the hormonal regulation and timing of the menstrual phases.
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