Name the most accepted theory of sap what are the concept on which the theory is based
Answers
Answered by
0
ascent of sap is best described by the cohesion and tension theory of Dixon and jolly .It is based on transpiration pull and the cohesive forces between two water molecules and adhesive force between water and xylem wall. these forces maintain the continuity of water channel in xylem. when transpiration takes place water is pulled upwards and due to water potential changes, water is absorbed by roots and transported upwards.This takes place due to negative pressure.
Similar questions