The process of plasmolysis in plant cell is defined as: (a) Breakdown of plasma membrane in hypotonic solution. (b) Shrinkage of cytoplasm in hypertonic medium. (c) Shrinkage of Nucleoplasm. (d) None of these.

Answer: The right option is (b).

Plasmolysis is the procedure of shrinkage or contraction of a plant cell’s protoplasm. This phenomenon takes place because of the loss of moisture in the plant cell. Plasmolysis occurs due to osmosis and we can rarely notice this process in nature. 

Examples of plasmolysis:

• Contraction of vegetables during the hypertonic condition.
• At the time of vigorous coastal flooding, seawater deposits salt on the shores.