The breakage and fracture of the water column | vedclass

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(D) The ascent of sap in plants is primarily explained by the Cohesion-Tension-Transpiration Pull model. Transpiration creates a negative pressure (te

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Transpiration pull

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(D) The ascent of sap in plants is primarily explained by the Cohesion-Tension-Transpiration Pull model. Transpiration creates a negative pressure (tension) in the xylem vessels,which pulls the water column upward. However,if the tension becomes too high,it can cause the water column to break or fracture,a phenomenon known as cavitation or embolism. This is primarily caused by the excessive transpiration pull that exceeds the cohesive strength of the water column.

The breakage and fracture of the water column in the xylem during the ascent of sap is caused by ...........

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