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Question

Water exudation through hydathodes is

A
Guttation
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B
Transpiration
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C
Hydrolysis
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D
Excretion
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Solution

The correct option is A Guttation
Water exduation through hydathodes is known as guttation. Guttation is the process of loss of impure water (a dilute solution of different organic and inorganic substances) from plant infact, mostly from margins of leaves. It occurs when transpiration rate is very low as compared to rate of water absorption. Due to this root pressure is developed and water is pushed out through specialized pores at vein endings called hydrathodes. Each hydrathode is made up of group of loosely arranged achlorophyllous or colorless and parenchymatous cells called epithem. These cells help in absorbing a good percentage of inorganic and organic solutes present in the exudate.
So, the correct answer is option A.

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