An ovarian condition causes the concentration of one ovarian hormone to fall soon after ovulation. The table shows mean measurements on day 24 for cycles in women with the condition and for unaffected cycles.
| Cycle type | Uterus lining thickness / mm | FSH concentration / IU L⁻¹ | LH concentration / IU L⁻¹ |
|---|---|---|---|
| unaffected | 10.1 | 3.1 | 2.7 |
| with the condition | 5.9 | 7.0 | 6.2 |
Suggest which ovarian hormone falls early in women with the condition. Explain your answer using the data.
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.