Question

. (a) Explain. the phenomenon of Plasmolysis

Answer 1

Plasmolysis is the process in which cells lose water in a hypertonic solution. The reverse process, cytolysis, can occur if the cell is in a hypotonic solution resulting in a lower external osmotic pressure and a net flow of water into the cell. Through observation of plasmolysis and deplasmolysis, it is possible to determine the tonicity of the cell's environment as well as the rate solute molecules cross the cellular membrane.

When a plant cell is placed in a hypertonic solution water moves out, first from cytoplasm and then from vacuole. Cell membrane shrinks away from the cell wall. This is known as plasmolysis.

Answer 2

plasmolysis is the process in which cells loose water in a hypertonic solution.the reverse process,cytolysis can happen if the cells is in hypotenic solution resulting in a lower external osmotic level .
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