8. (a) With the help of well-labelled diagrams, describe the process of plasmolysis in plants, giving appropriate examples.
Plasmolysis refers to the shrinkage of the cytoplasm of the cell away from its cell wall under the influence of a hypertonic solution. Plasmolysis occurs because of the movement of water from the intracellular space to the outer-cellular space. This happens when the Plant cell is Placed in a hypertonic solution (i.e., a solution having more solute concentration than the cell cytoplasm). It will cause the water to move out of the cell and toward the solution. The cytoplasm of the cell Shrinks and the cell is said to be plasmolysed. This process can be observed in an onion peel kept in a highly concentrated salt solution.