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CAIE IGCSE Biology 8.2.2 Large Surface Area of Root Hairs Questions

Practise explaining why root hair projections give epidermal cells a large soil-contact surface for absorbing water and mineral ions efficiently.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • state that root hair projections increase the surface area of root epidermal cells
  • link larger soil contact area to faster uptake of water or mineral ions
  • choose large surface area over distractors such as chloroplasts or cell-sap volume

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