Passive Movement of Water and Solutes into the Absorbing Region of the Root

The relation of the rate of passive movement of water into theabsorbing region of the root to the difference between the osmoticpressures of the external solution and those of the exudatefrom the xylem of a detopped plant or isolated root, and alsothe relation of the rate of passive movement of solute to thedifferences of concentration of solute of electric potentialare considered.