Wednesday 28 November 2012

Remoal of extra water

Remoal of extra water:
We Know that obtain water from soil and is also produced in the body during cellular respiration. Plant store large amount of water in their cells for turgidity. Extra water is  removed form plant body by transpiration.
At night, transpiration usually dose not occur because most plants have their stomata closed. If there is a high water content in soil, water enters  the roots and is accumulated in xylem vessels. Some plants such
as grasses frose this water through special prose, present at leaf tips or edges, and form drops. The appearance of drops of water on the tip or edges of leaes is called guttation.

Recalling:
Transpiration is the loss of water from plant surface in the from of vapours.
Guttation is not to be confused with dew, Which condenses from the atmosphere onto plant surface.

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