Water transport through plants
- Created by: elen roberts
- Created on: 23-05-13 15:39
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- Water transport in plants
- Xylem
- Transport through xylem vessels
- Composed of dead cells joined to form empty tubes, before cells die they form a thick cell wall containing lignin in rings or helices
- Lignin makes vessels very strong so they can withstand pressure
- Usually forms a star shape called stele
- Roots
- Epidermis - single layered with root hairs to increase pressure
- Cortex - Thick layer of packing cells containing stored starch
- Endodermis - single layer of tightly packed cells, waterproof casparian *****
- Pericycle - undifferentiated cells
- Vascular tissue - contains xylem and phloem cells, continuous with stem vascular bundles.
- Xylem
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