What is meant by plasmolysis ? How is it practically useful to us ?

* The phenomenon of shrinkage of protoplast due to osmotic diffusion of water from the cells
into surrounding environment is called plasmolysis.
* This occurs when the cell (or tissue) is placed in a hypertonic solution.
* Water moves out; it is first lost from the cytoplasm and then from the vacuole.
* The salting of Pickles and preserving of Fish and Meat in salt are good examples of practical applications of plasmolysis.