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Apr 28, 2017 · Last Updated: April 28, 2017. Turgid Definition. In biology, turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake. Some cells will lyse, or split open if they become too turgid.
Turgidity is the point at which the cell's membrane pushes against the cell wall, which is when turgor pressure is high. When the cell has low turgor pressure, it is flaccid. In plants, this is shown as wilted anatomical structures. This is more specifically known as plasmolysis. [7]
Turgor, 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.
- The Editors of Encyclopaedia Britannica
Feb 3, 2023 · Turgor pressure, also known as pressure potential or hydrostatic pressure, is the pressure exerted by the cell’s fluid content (e.g., water) against the cell wall. It is represented by the symbol ‘Ψp’. Turgor pressure is critical to a plant ’s vital processes such as osmosis, transpiration, and photosynthesis.
The plasma membrane can only expand to the limit of the rigid cell wall, so the cell won't burst, or lyse. In fact, the cytoplasm in plants is generally a bit hypertonic to the cellular environment, and water will enter a cell until its internal pressure— turgor pressure —prevents further influx.
Sep 8, 2023 · Turgor pressure is the pressure that is exerted by the fluid (water) on the wall of a cell, or by the fluid inside the central vacuole of a plant cell. Learn more.
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