Question

Root pressure in simple difination and form ​

Answer 1

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.

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Answer 2

• The transverse osmotic pressure inside the cells of a root system causes sap to climb from the plant stem to the leaves, which is referred to as root pressure.
• When the soil moisture level is high at night or when transpiration is low during the day, root pressure develops in the xylem of some vascular plants.
• Because of transpirational drag, when transpiration is strong, xylem sap is normally under tension rather than pressure.
• The guttation or exudation of xylem sap from the tips or margins of leaves occurs at night in some plants due to root pressure.
• By cutting a plant's branch at the soil level, root pressure may be measured.
• Because of the root pressure, xylem sap will leak from the damaged stem for hours or days.
• The root pressure may be determined using a pressure gauge affixed to the severed stem.