Igcse Model Questions Vol1 2021 Biology Question 9

Practice essay / theory question 9 from the 2021 Igcse Model Questions Vol1 Biology examination. This question covers Hormonal regulation of the menstrual cycle, Fertilisation and early embryonic changes, Contraceptive methods – evaluation .

Igcse Model Questions Vol1 2021 Biology Essay / Theory
Topics: Hormonal regulation of the menstrual cycle Fertilisation and early embryonic changes Contraceptive methods – evaluation
Question 9 IGCSE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • essay

Human reproduction involves a complex interplay of anatomical structures, hormones and cellular events. Answer the following questions in detail.

Question Parts

( a )
Describe the hormonal regulation of the menstrual cycle, giving particular attention to the feedback mechanisms that operate during the follicular phase, the mid‑cycle LH surge and the luteal phase.
( b )
Explain the sequence of events that occur from the moment a sperm reaches the ovum to the formation of the zygote, and describe the changes that prevent polyspermy.
( c )
Two widely used contraceptive methods are the combined oral contraceptive pill (COCP) and the intra‑uterine device (IUD). Evaluate both methods in terms of effectiveness, side‑effects and suitability for different groups of women.

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About This Question

This is Igcse Model Questions Vol1 2021 Biology Question 9. It is one of the essay questions from the 2021 Igcse Model Questions Vol1 Biology examination.

The question covers Hormonal regulation of the menstrual cycle, Fertilisation and early embryonic changes, Contraceptive methods – evaluation .

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