what are the demerits of transpiration pull theory?
Demerits of transpiration pull theory:
The gases dissolved in sap form air bubbles under tension and high temperature. The air bubbles break the continuity of water column and prevent ascent of sap due to transpiration pull.
The gases dissolved in sap form air bubbles under tension and high temperature. The air bubbles break the continuity of water column and prevent ascent of sap due to transpiration pull.