2.53 uptake of water in the roots

- branching pattern in root hair cell

   - increase surface area for absorption of water

   - roots branch out, looks for water source

- hairs emerging from end of root - root hairs

   - epidermal cells

   - cell wall extended (root hair structure) - increases surface area for abs H2O

- root hair structure on epidermal cells

   - surface area concept

   - mechanism - active transport of minerals (movement against conc. gradient, involving energy)

- plant actively concentrates minerals inside root, encourages plant to take in water by osmosis (from dilute (soil water) to concentrated (created by building up minerals in cells))

- water moves across cortex of root to xylem by osmosis