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Transpiration pull is well-developed in vessels. This is because water possess
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High tensile strength and high capillarity
Transpiration pull
- Transpiration pull plays a major role in the transport of water in most of the plants.
- Transpiration-driven ascent of xylem sap depends upon following physical properties of water:
1. Cohesion: It is the force of attraction between the water molecules.
2. Adhesion: It is the force of attraction between the water molecules and the polar surface of xylem vessels.
3. Surface tension: In comparison to the gas phase, water molecules are more attracted in the liquid phase. Because of the above properties, water possesses high tensile strength (ability to resist a pulling force) and high capillarity (ability to rise in thin tubes).
- Transpiration pull plays a major role in the transport of water in most of the plants.
- Transpiration-driven ascent of xylem sap depends upon following physical properties of water:
1. Cohesion: It is the force of attraction between the water molecules.
2. Adhesion: It is the force of attraction between the water molecules and the polar surface of xylem vessels.
3. Surface tension: In comparison to the gas phase, water molecules are more attracted in the liquid phase. Because of the above properties, water possesses high tensile strength (ability to resist a pulling force) and high capillarity (ability to rise in thin tubes).
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