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The Fundamental Unit of Life — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life4 Marks
Question
Write down the differences between diffusion and osmosis.
✓

Answer

 
Diffusion
 
Osmosis
1.
Diffusion can occur in any medium.
1.
It occurs only in liquid medium.
2.
The diffusing molecules may be solids, liquids or gases.
2.
It involves movement of solvent molecules only.
3.
Semipermeable membrane is not required.
3.
Semipermeable membrane is required.
4.
An equilibrium in the free energy of diffusion molecules is achieved in the system.
4.
Equilibrium in the free energy of solvent molecules is never achieved.

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