Name and define the process responsible for ascent of sap?
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Answers
Explanation:
The process responsible for ascent of sap are:
1) Transpiration pull - When water is lost through the leaf stomata it is called transpiration .
2) Root pressure - Root hair are constantly absorbing water from the soil, building an internal pressure called root pressure . This root pressure constantly pushes water in the xylem elements in the roots .
3. Capillary action : It is the ability of water to rise up in thing tubes or columns. Water has the property of cohesion that binds the water molecules together as well as adhesion which helps the water molecules to stay attracted to the xylem walls.
4. Imbibition : It is the phenomenon in which colloidal particles attract a large amount of water. This also adds up in the overall process of ascent of xylem sap.
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Answer:
transpirational pull