From epithem hydathodes, the water comes out due to
A
Imibibition pressure
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B
Osmotic pressure
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C
Root pressure
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D
All of the above
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Solution
The correct option is C Root pressure Hydathodes are secretory tissues involved in the process of guttation. These water glands are present on the edge of the leaves. They contain epithem which has loosely arranged cells with large intercellular spaces. During guttation, positive root pressure forces water to come out from the epithem hydrathodes in the form of drops.