The Phenomenon of Transpiration Pull in Plants
The phenomenon of transpiration pull in plants is discussed below:
- During transpiration, the water molecules from the soil are combined due to cohesive force and create a column of water in the xylem.
- The adhesive force between water molecules and the xylem vessel also contributes to constructing this water column.
- A suction force or transpiration pull is then generated that helps in the upward movement of water to the leaves and other green parts of the plant where photosynthesis takes place.
- An opposing hydrostatic pressure in the mesophyll cells of the leaves also operates to maintain the pull of water from the roots through the stem towards the leaves of the plant.
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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