movement of water through roots

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  • Created by: ben
  • Created on: 01-05-13 11:00

Uptake of Water by Roots Hairs
-- all water need to be absorbed due to the loss from transpiration.
-- they are efficient exchange surface becasue:
       ~they have a large surface are due to there being a lot of them & being very long.
       ~they have a thin cell surface therefore there is a short difusion pathway.
-- they are surrounded by soil consiting of a lot of water and mineral.
-- the soil has a high water potential compared to the root hairs.
-- therefore water moves in via osmosis


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