Introductory Crop Physiology (1+1)

Endosmosis

• If a living plant cell is placed in water or hypotonic solution whose OP is lower than cell sap, water enters into the cell sap through osmosis and the process is called endosmosis.
• Due to the entry of water within the cell sap, a pressure is developed which press the protoplasm against the cell wall and the cell becomes turgid. This pressure is called as turgor pressure.
• Consequence of the turgor pressure is the wall pressure which is exerted by the elastic cell wall against the expanding protoplasm. At a given time, turgor pressure (TP) equals the wall pressure (WP) i.e. TP=WP.