Question

what is root pressure

Answer 1

Root pressure, in plants, force that helps to drive fluids upward into the water-conducting vessels (xylem). It is primarily generated by osmotic pressure in the cells of the roots and can be demonstrated by exudation of fluid when the stem is cut off just aboveground. It is partially responsible for the rise of water in plants.

Answer 2

root pressure is the transverse osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves. root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day.