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Pressure exerted by fluid in a cell that presses the cell membrane against the cell wall. Turgor is what makes living plant tissue rigid. Loss of turgor, resulting from the loss of water from plant cells, causes flowers and leaves to wilt. Turgor plays a key role in the opening and closing of stomata (seestoma) in leaves.
This entry comes from Encyclopædia Britannica Concise. For the full entry on turgor, visit Britannica.com.