Question 3(c)(i)
[Maximum number: 3]
The diagram shows a magnified image of a root hair cell from a young plant.
Explain the role of the root hair cell in absorption of water from the soil.
Edexcel IGCSE Biology 2.55B root hair water absorption
Practise root hair absorption by linking cell adaptations to osmosis, water uptake and modified plant water-loss investigations.
How this is tested
- Explain root hair adaptations using surface area, thin walls and osmosis.
- Link damaged or removed roots to reduced water uptake and higher drying risk.
- Design water-loss comparisons with matched plants, controlled conditions and repeats.