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The Fundamental Unit of Life — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life4 Marks
Question
What is osmosis?
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Answer

The movement of water molecules from a region of high concentration to a region of low concentration through a selectively permeable membrane is called osmosis. It is a special case of diffusion, where the medium is water. For example, if the medium surrounding the cell has a higher water concentration than the cell i.e., if the solution is a dilute solution, then the cell will gain water by osmosis.

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