What is guttation? Explain with examples.

1.	What is guttation? Explain with examples.
Answer» Guttation: The exudation of water from plants in a liquid form, by leaves is known as guttation. It takes place when environmental conditions are favourable, so, as to check transpiration, the air is very humid. Sometimes, water oozes out of the margin of leaves of peepal, tomato, Nasturtium, lawn grass in the morning hours and in the night in the form of minute drops. This is called guttation. In plants which show guttation, there are special stomata, the water stomata or hydathodes located on margin and the apex of leaves, just next to the vein ending. They open internally into a small cavity surrounded by thin-walled parenchyma. Conditions for guttation: (i) Guttation increases when absorption rate is more than the rate of transpiration. (ii) When there is enough humidity in the atmosphere, then guttation is more.

Answer»

Guttation: The exudation of water from plants in a liquid form, by leaves is known as guttation. It takes place when environmental conditions are favourable, so, as to check transpiration, the air is very humid.

Sometimes, water oozes out of the margin of leaves of peepal, tomato, Nasturtium, lawn grass in the morning hours and in the night in the form of minute drops. This is called guttation.
In plants which show guttation, there are special stomata, the water stomata or hydathodes located on margin and the apex of leaves, just next to the vein ending. They open internally into a small cavity surrounded by thin-walled parenchyma.

Conditions for guttation:

(i) Guttation increases when absorption rate is more than the rate of transpiration.

(ii) When there is enough humidity in the atmosphere, then guttation is more.

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