The hypothesis used to explain how water can travel upwards against gravity in a plant. Transpiration is believed to play a large factor in this, where the cohesive water travels upwards replacing water lost.
Dictionary > Cohesion Tension Theory
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The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tutorial will be more or less a quick review of the various principles of water motion in reference to plants. ..
