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Water exuded by guttation

  1. Jun 5, 2007 #1
    1. The problem statement, all variables and given/known data

    Droplets of water may sometimes be seen on the margins of the leaves of a banana plant, growing in wet soil, in tthe mornings. Are these dew drops? Comment on you answer.


    3. The attempt at a solution

    These can be either dew drops or water exuded by guttation. what do you think?
     
  2. jcsd
  3. Jun 5, 2007 #2
    Here's a definition via Google.

    The water exuded from leaves as a result of root pressure. Sometimes guttation is confused with dew, although the origin and appearance of the resulting drops are different. On grass, dew appears as many drops that cover the surface of the blade; dew forms by condensation from water vapor in the atmosphere. Guttation appears as a single large pendant drop at the tip of the blade; guttation forms by the extrusion of liquid water from the moist ground. ...
     
  4. Jun 10, 2007 #3
    Hydathodes

    on the margin of the leaf , there are small porous structures called HYDATHODES, during guttation , due to excess pressure, the water droplets come out of those HYDATHODES. they are not dew drops.
     
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