The primary mechanism for xylem sap ascent in tall trees is transpiration pull. However, root pressure plays a minor role. Which statement BEST describes the limited contribution of root pressure to overall xylem sap ascent in tall trees?
Root pressure generates excessive pressure that could damage the delicate xylem tissues in tall trees.
Root pressure is only active during the night and therefore cannot contribute to daytime transpiration.
Tall trees have a significantly lower root surface area to volume ratio, minimizing the contribution of root pressure.
Root pressure can only push water a limited height due to the opposing force of gravity and the relatively low pressure generated.
Related Questions
    Examples of bulk flow by a positive hydrostatic pressure gradient and a negative hydrostatic pressure gradient are
Suction through straw and swelling of wood, respectively
Imbibition and a garden hose
    Garden hose and suction through a straw, respectively
    Swelling of wood and imbibition, respectively
    Examples of bulk flow by a positive hydrostatic pressure gradient and a negative hydrostatic pressure gradient are
Suction through straw and swelling of wood, respectively
Imbibition and a garden hose
    Garden hose and suction through a straw, respectively
    Swelling of wood and imbibition, respectively
