Differences between a flaccid and a turgid cell?
When a cell is kept in a hypotonic solution which has higher water concentration than outside, there is a net movement of water within the cell and the cell swells up, this swelling of cell pushes the plasma membrane against the cell wall, this creates a pressure against the cell wall and this pressure is called turgor pressure or turgidity and a cell in this condition is said to be turgid.
When the turgid cell start releasing water, a stage comes where the water content inside the cell and outside is more or less equal or isotonic. In this stage the cell is called flaccid cell. The flaccid cell releases more and more water to become plasmolysed cell. Flaccidity is the state of cell between turgidity and plasmolysis.
A turgid cell is one that is full of water, swollen and rigid. A flaccid cell is one that has lost water due to osmosis and is limp and unable to support the plant. However, to fully understand the cycle of turgor pressure and osmotic flow (the forces that determine whether a plant cell becomes turgid of flaccid) there are several terms you also need to remember: