In ferns, guttation occurs through special glands called
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Maybe the gland name is hydathode
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Guttation is the process in which liquefied water is given off from plants.
It takes place through Hydathodes .
Guttation is caused when root pressure pushes water up to the leaves and stem from the roots . This occurs during the night when stomata are closed and transpiration is over for the day. It occurs in plants [that are less than about 10 m tall,] where hydrostatic pressure is not sufficient to prevent it stop the flow of water into the xylem, when the rate of transpiration is low.
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