4.2 Transport in plants

  • Created by: 14mut64
  • Created on: 12-05-19 09:39

Xylem

  • Xylem structure:
    • no living contents in the hollow xylem vessel
    • thick wall
    • continuous column
    • cell walls are made of lignin
    • lignin makes xylem water-proo
  • Xylem's role:
    • transports water and ions 
    • it is a transpiration stream 
    • has a continuous column of water
    • moves water from roots to leaves
    • water is lost through transpiration
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Phloem

  • Phloem:
    • transports glucose from site of photosynthesis to other parts of plant
    • have sieve plates that allow cytoplasm to be connected
    • companion cell controlls movement of the contents

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