PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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decreases
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increases
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stays the same
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None of the above
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Detailed explanation-1: -The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis. As transpiration occurs, it deepens the meniscus of water in the leaf, creating negative pressure (also called tension or suction).
Detailed explanation-2: -The Phenomenon of Transpiration Pull-in Plants During transpiration, a negative hydrostatic pressure is generated in the mesophyll cells to draw water from the roots to the veins of the leaves.
Detailed explanation-3: -Cohesion refers to the pull of water through the xylem, as water vapor diffuses from the stomata. Cohesion refers to the movement of water from the soil into the root, from an area of low solute concentration to an area of high solute concentration.