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D3.1.5—Ovarian and uterine cycles Topic Practice

D3.1.5—Ovarian and uterine cycles Topic Practice
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise hormone feedback in ovarian and uterine cycles, including graph interpretation, ovulation timing and links between FSH, LH, estrogen and progesterone.

How this is tested

  • interpret hormone graphs to match FSH, LH, estrogen or progesterone with cycle events
  • explain feedback between follicle hormones and pituitary secretion during the cycle
  • link LH surge and progesterone changes to ovulation and the post-ovulation phase
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