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Menstrual Cycle

Easybiology

Ovulation is triggered by a surge in which hormone?

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About This Question

Subject
biology
Chapter
reproduction
Topic
menstrual cycle
Difficulty
Easy
Year
2025
Tags
Menstrual CycleHormones

Solution

Correct Answer:

LH

  1. Menstrual Cycle: Controlled by pituitary and ovarian hormones.
  2. Gonadotropins ( and ): These increase gradually during the follicular phase.
  3. The Surge: In the middle of the cycle (around day 14), both and attain a peak level.
  4. LH Surge: Rapid secretion of LH leading to its maximum level induces the rupture of the Graafian follicle.
  5. Result: This leads to the release of the ovum (ovulation).

This easy difficulty biology question is from the chapter reproduction, covering the topic of menstrual cycle. It appeared in the 2025 exam.

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