The ascent of xylem sap in plants is mainly a | vedclass

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(C) The ascent of xylem sap in plants is primarily driven by the $Transpiration$ $Pull$ mechanism,which is explained by the $Cohesion-Tension$ theory.

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cohesion and adhesion between water molecules

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(C) The ascent of xylem sap in plants is primarily driven by the $Transpiration$ $Pull$ mechanism,which is explained by the $Cohesion-Tension$ theory.$1$. $Cohesion$: The mutual attraction between water molecules due to hydrogen bonding.$2$. $Adhesion$: The attraction of water molecules to the polar surfaces of the xylem vessel walls.$3$. $Surface$ $Tension$: Water molecules are more attracted to each other in the liquid phase than to water in the gas phase.These forces create a continuous water column that is pulled upward by the negative pressure generated by transpiration at the leaf surface. While root pressure contributes to the movement of water,it is not sufficient to push water to the heights of tall trees,making cohesion and adhesion the primary factors.

The ascent of xylem sap in plants is mainly accomplished by the:

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