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Nature & Animals

Which force balances hydrostatic pressures to facilitate xylem water transport?

A)Cohesion-tension mechanism
B)Gravitational fluid sinking
C)Capillary action reduction
D)Osmotic solute accumulation

💡 Explanation

Water ascent against gravity uses the cohesion-tension mechanism, as transpiration creates a negative pressure gradient, passively pulling up while balanced cohesion and adhesion forces resist tensile stress; therefore water flows upward rather than succumbing exclusively to gravity or osmotic pull.

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