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Turgor pressure is the pressure which is exerted by water to the wall of a cell. For example, if a balloon is filled up with water, it swells as more water draws in. The pressure which the water exerts against the walls of balloon is similar to the turgor pressure exerted against the wall.
Turgor pressure is key to the plant’s vital processes. It makes the plant cell stiff and rigid. Without it, the plant cell becomes flaccid. Prolonged flaccidity could lead to the wilting of plants. Turgor pressure is also important in stomate formation. The turgid guard cells create an opening for gas exchange. Carbon dioxide could enter and be used for photosynthesis.
What else can I help you with?
Can plant cells have negative turgar pressure values?
Yes, plant cells can have negative turgor pressure values when there is water loss through transpiration or when the cell loses water due to osmotic gradients. This can cause the cell to plasmolyze or shrink, resulting in negative turgor pressure.
What is the difference between a flaccid cell and plasmolised cell?
A flaccid cell has lost water and lacks turgor pressure, while a plasmolysed cell has lost so much water that the plasma membrane has detached from the cell wall. Flaccid cells are not necessarily plasmolysed, but plasmolysed cells are always flaccid.
