The table shows observations from two cycles in the same woman.
Table
| Observation | Cycle P | Cycle Q |
|---|---|---|
| Ovulation | occurred | occurred |
| Progesterone near the expected next menstruation | high | low |
| Uterus lining | maintained | breaking down |
Which conclusion is supported by both observations near the end of the cycles?
Cycle P is consistent with menstruation; cycle Q is consistent with pregnancy.
Both cycles are consistent with menstruation because ovulation occurred in each.
Both cycles are consistent with pregnancy because ovulation occurred in each.
Cycle P is consistent with pregnancy; cycle Q is consistent with menstruation.
90 exam-style questions on Edexcel GCSE Biology 7.2 Reproductive hormones, covering 7.2.1 Stages of the menstrual cycle, 7.2.2 Hormonal control of the menstrual cycle, 7.2.3 Hormonal contraception, 7.2.4 Evaluating contraception methods, and 7.2.5 Hormones in Assisted Reproductive Technology. Each one has a worked solution and a mark scheme showing where the marks go.