The process by which water is "pulled" up through the xylem columns of plants and evaporated out of the leaves is called

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This process is called transpiration, which involves the evaporation of water from the leaves and the subsequent movement of water through the xylem columns of the plant. The pulling force that causes this movement is due to the water potential gradient between the soil and the atmosphere, and is facilitated by the cohesion and adhesion properties of water molecules. The term "root pressure" refers to a different mechanism by which water is pushed up through the xylem columns by pressure generated in the roots, but this is not the primary mechanism responsible for water movement in plants. Osmosis is a process by which water moves across a membrane in response to differences in solute concentration, but this is not directly involved in the movement of water through the xylem columns. Adhesion and cohesion of water molecules are important properties that help facilitate the movement of water through the xylem, but they are not the processes responsible for the overall movement of water through the plant.

The Process by Which Water Is "Pulled" Up Through the Xylem