Difference between Transpiration and Guttation

Transpiration is loss of water from the aerial parts of plants. mainly of three types. Guttation is loss of water from the margin of the leaf in the form of droplets.

1. Difference between Transpiration and Guttation BY BHARTI

2. Transpiration Transpiration is loss of water from the aerial parts of a plant in the form of vapours. 99% of the water absorbed is lost as transpiration. Out of the remaining 1%, 0.9% is retained as free water and 0.1% is a reactant in metabolism. 3 types of transpiration Stomatal transpiration- accounts for 90-95% of foliar transpiration. Cuticular transpiration- accounts for 5- 10% of transpiration. Lenticular transpiration- accounts for 0.1% transpiration. Lenticels are present in fruit walls and woody stem.

3. Guttation Guttation is loss of water from the margin of leave in the form of droplets. It is in the form of liquid that is water, contains solutes like minerals, organic acids, sugars and even enzymes. It take place through hydathodes. It is observed in herbaceous plants under high humidity, high soil water content and when transpiration rate is low or absent. About 150 to 250 plants that shows guttation. Guttation is an evidence in favour of root pressure.

4. Differences between Transpiration and Guttation transpiration It is loss of water from the aerial parts of plants. Loss of water is in vapour form. Occur mainly in day time. Pure water vapour. guttation It is loss of water from the margin of leaves in the form of droplets. Loss of water is in liquid form. Occur during night or mostly early morning. Impure water as it contains dissolved solutes like minerals, sugars and organic acids.

5. transpiration Occur through stomata, cuticle , lenticels or epidermis. Controlled phenomenon. Associated with regulation of temperature. Not related to root pressure. Occurring all the time mainly, when temperature is high and sun is shinning. guttation Occur through hydathodes. Uncontrolled phenomenon. No such role seen in guttation. It is because of root pressure. Occur under high humidity, high soil water content and when transpiration is low or absent.

6. LS of leaf apex and Hydathode

7. transpiration Seen in all kinds of plants. Role- in ascent of sap where along with water mineral uptake also occur, cooling effect, uptake of carbon dioxide and stomatal movement. Example- Mangifera indica, polyalthia longifolia. guttation Observed in herbaceous plants only about 150 to 250 plants. No such role performed by guttation. Examples- Lycopersicon esculentum , Colocasia , balsam and grasses.