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(B) The Cohesion-Tension theory explains the ascent of sap in plants.According to this theory, the loss of water from the leaves through transpiration

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Transpiration

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(B) The Cohesion-Tension theory explains the ascent of sap in plants.According to this theory, the loss of water from the leaves through transpiration creates a negative pressure or tension in the xylem vessels.This tension pulls the water column upwards from the roots to the leaves due to the cohesive and adhesive properties of water molecules.Therefore, this theory is directly related to transpiration, and it is also commonly referred to as the $Transpiration 	ext{ } Pull 	ext{ } Theory$.

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