Chapter 8 - Transport in plants

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  • Created by: E456
  • Created on: 22-03-17 11:14

WATER UPTAKE

  • The function of root hairs is to absorb water and minerals from the soil. Water moves into a root hair by osmosis
  • The pressure at the top of the xylem vessels is lowered, while the pressure at the bottom stays high. Water therefore flows up the xylem vessels. 

TRANSPIRATION

  • A potometer can be used to compare the rate of transpiration in different conditions. 
  • Conditions that affect transpiration rate:
    • temperature - transpiration increases as temperature increases.
    • humidity - transpiration…

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