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Diffusion - class-XII
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Choose the best definition for 'diffusion' from the following.
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A
Passive movement from an area of greater concentration to one of lesser concentration
💡 Explanation:
Diffusion is a type of passive transport which do not require expenditure of cellular energy for the net movement of a substance from a region of high solute concentration to a region of low solute concentration. This is also referred to as the movement of a substance down a concentration gradient.