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Biology · Edexcel 4BI1 · Biology Paper 1 · January 2021

Edexcel IGCSE Biology Biology Paper 1 January 2021 examiner report (4BI1/1B)

2h 110 marks

Examiner report

  1. Q1 - 7 marks - The human reproductive system
  2. Q2 - 8 marks - Digestion, Energy in ecosystems, Photosynthesis
  3. Q3 - 12 marks - Blood vessels, The heart and circulation
  4. Q4 - 11 marks - Natural selection, Sampling and fieldwork, Transport in and out of cells, Water pollution
  5. Q5 - 10 marks - Temperature regulation
  6. Q6 - 9 marks - The reflex arc
  7. Q7 - 16 marks - Osmosis, Seed germination, Transport in and out of cells, Tropisms
  8. Q8 - 11 marks - Increasing crop yield
  9. Q9 - 11 marks - Blood, Monohybrid inheritance, Pathogens, Probability and ratios in genetic crosses, Sex determination
  10. Q10 - 9 marks - Rate of diffusion, Transport in and out of cells
  11. Q11 - 6 marks - Food production using micro-organisms