How the following phenomena help in the ascent of sap in the plants?
1. Diffusion
2. Osmosis
3. Capillary action
4. Root pressure
5. Transpirational pull
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Capillary action along with the root pressure, the ascent of sap is mainly due to passive forces that develop within the plant, due to certain environmental factors that act upon the plant. tracheids and vessels of the xylem behave as capillary tubes. Ascent of sap is partly due to the capillarity of these tissues
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