Question

How is plasmolysis related to turgor pressure in plant cells?

Answer 1

Hint: Turgor pressure is termed as the pressure that is exerted by fluid in a cell that glues the cell membrane against the cell wall. Wall pressure is termed as the pressure that is exerted on the contents of a plant cell by the cell wall that is equal and opposite to that of the force of the turgor pressure.

Complete answer:
When the water shows movement out of the cell, the cell and cell membrane of the plant shrinks away from the cell wall resulting in plasmolysis. This process is usually reversible so that it can be reversed back. When a cell is put in a hypotonic solution the water from the surrounding gets inside into the cell resulting in pressure build-up against the cell wall.

This pressure is usually termed as the turgor pressure. In a cell that is put in the hypertonic solution the cell membrane shrinks and no pressure gets developed against the cell wall. As a result, the turgor pressure is zero.

When the water is drawn out of the cell with the help of diffusion into the extracellular fluid that leads the protoplast to shrink away from the cell wall. If the plasma membrane shrinks away only from the cell wall corners, it is termed as the incipient plasmolysis. If this cell is put in a hypertonic solution for a long time, then the cell results in a completely plasmolyzed cell.
In a case of completely plasmolyzed cells, the solute potential is equal to the water potential and the pressure against the cell wall in this case is zero.

Note: Some of the applications of plasmolysis that are included , are used in the salting of meat, fish, and pickles. When they are plasmolyzed, water content present inside the cell will be very low so the chances attacking pathogens like bacteria are low.