What is the Transpirational Pull?
The transpirational pull definition states that it is a suction force that pulls water from soil up to the leaves of the plants. When plants transpire, i.e. when they lose water in the form of water vapour, a negative pressure gradient develops within the xylem vessels.
This pressure difference along with cohesive and adhesive forces of water develops a cumulative force that pulls the water from the ground to the topmost parts of the plant. This force or pull is called the transpirational pull. Transpirational pull is extremely important for the plant as it helps in the ascent of sap and the proper distribution of water and minerals throughout the plant body.
Transpiration Pull in Plants
An overview of transpiration pull in plants describes the details of transpiration pull, a physiological process that helps the plants pull the water from the soil to the leaves by a force generated within the xylem. This process starts when the stomatal opening of the leaf allows water and carbon dioxide to enter the plant.
As photosynthesis happens, water vapor is released through the leaf, causing a drop in air pressure within the leaf. This negative air pressure aids the water molecules to reach the leaf through the stem. In this article, we will look into transpiration pull – meaning, phenomenon, factors affecting, and significance of transpirational pull in plants.
Table of Content
- What is Transpiration?
- What is the Transpirational Pull?
- Cohesion Hypothesis
- The Phenomenon of Transpiration Pull in Plants
- Role of Transpiration Pull in Plants
- Conclusion – An Overview of Transpiration Pull in Plants
- FAQs on Transpiration Pull in Plants
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