Question 13 — A student claims, “In humans - Questions at the end of the chapter - Chapter 11 - Reproduction: How Life Continues (Exploration)

Last updated at July 3, 2026 by

Question 13
A student claims, “In humans, ovulation always happens on day 14 of the menstrual cycle”. Critically examine this claim and state whether the claim is correct or not. Give at least two reasons for your answer.
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  • The claim is not fully correct . Day 14 ovulation is only an average for a typical 28-day cycle.
  • Reason 1: cycle length varies from 21–35 days between people. Reason 2: ovulation day shifts with cycle length, stress, health and hormones — so it does not always fall on day 14.
Ovulation on Day 14? Day 14 fits only an average 28-day cycle Cycles vary from 21 to 35 days So it is not always day 14 → claim is wrong
Back to: 11.5.6 What happens when an egg is not fertilised?
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