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What is transpiration?

Kevin Sutter

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Craig Stewart on July 1, 2018

Transpiration is the evaporation of cellular water (in the form of water vapour) from the stoma in the leaves of the plants. Stoma are "pores" and are generally found in the of the bottom of the leaves of the plants. Accumulation of water in the leaves of the plants is lost as water vapor through the process of transpiration, this is similar to the process of sweating in animals. The perspiration accomplishes two things, makes cool of the sheets slightly through the evaporative cooling, it also causes what is known as the "flash draw", or "evaporation suction", this causes a slight low pressure in the leaves where the water evaporates, this provides a slight suction force to help with the water that climbs up the stem of the plant. I


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