RE-NEET 2026 Zoology Ovulation and Hormonal Regulation Assertion Reason Question
Given below are two statements:
Statement I: Ovulation is caused by LH surge leading to rupture of Graafian follicles.
Statement II: Graafian follicle remaining after ovulation transform into corpus luteum and secretes large amount of estrogen.
In the light of the above statements, choose the most appropriate answer from the options given below:
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are correct
Correct Answer
Detailed Explanation
Statement I is correct because ovulation is indeed triggered by a surge in luteinizing hormone (LH), which causes the Graafian follicle to rupture and release the egg. However, Statement II is incorrect; while the Graafian follicle transforms into the corpus luteum after ovulation, it primarily secretes progesterone, not large amounts of estrogen.
The tempting wrong options fail because they either misinterpret the hormonal roles or incorrectly assess the accuracy of the statements. For example, option D incorrectly claims both statements are correct, while option C wrongly states that Statement I is incorrect.
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