Give reasons for this sentence:
A plant cell when kept in a hypertonic salt solution for about $30$ minutes turns flaccid.

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Solution

When a living cell, such as the cell of a leaf of an aquatic plant, is placed in freshwater, it remains in a fully distended condition. Its plasma membrane remains in close contact with the cell wall and presses against it just like a rubber bladder of a football pushing against the leather casing. If this plant cell is now kept in a hypertonic solution for 30 minutes, it will lose its distended appearance, the cytoplasm will shrink and the plasma membrane will withdraw from the cell wall, this is called plasmolysis and the cells in this state are said to be limp or flaccid.

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Similar questions

Give reasons for the following:

(a) If you sprinkle some common salt on grass growing on a lawn,it is killed at that spot.

(b) If you uproot a plant from the soil,its leaves soon wilt.

(d) A plant cell when kept in a hypertonic salt solution for about 30 minutes turns flaccid.

(e) Potato cubes when placed in water become firm and increase in size.

Show by a series of diagrams, the change which a plant cell will undergo when placed in

(a) Hypertonic salt solution and

(b) Hypotonic salt solution.

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