2.53 Uptake of Water

Notes

Roots:
 - Branching increases Surface Area for absorption of water
 - Smallest ends of roots have root hairs - epidermis of root shows extension (hair) of cell wall
    - Increases S.A. for absorption of water

Absorption:
 1 Active transport (against concentration gradient, with energy) of minerals --> Surface     epidermal cells & inside root hair
 2 This encourages water uptake (osmosis), dilute = soil/water -->  concentrated = by
    minerals 'moved' into root hair through active transport.

- Water: From root cortex --> root xylem (by osmosis)