Waec Model Questions Vol1 2021 Biology Question 24

Practice objective / multiple choice question 24 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 24 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

In the normal menstrual cycle a pre‑ovulatory surge of luteinising hormone (LH) reaches about 25 IU and a minimum of 10 IU is required to trigger ovulation. A woman has a pituitary disorder that reduces the amplitude of LH surges by 40 % while follicle‑stimulating hormone (FSH) secretion remains unchanged. Will ovulation still occur in this woman?

Answer Options

A. Yes; the reduced surge (≈12 IU) still exceeds the 10 IU minimum, so ovulation can occur.
B. No; the reduced surge (≈15 IU) is close to the minimum and likely insufficient for ovulation.
Correct Answer C. Yes; the reduced surge (≈15 IU) still exceeds the 10 IU minimum, so ovulation can occur.
D. No; the reduced surge (≈15 IU) falls below the 10 IU threshold, preventing ovulation.
Correct Answer
C
Correct Option:
Yes; the reduced surge (≈15 IU) still exceeds the 10 IU minimum, so ovulation can occur.

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 24. It is a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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