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List the factors on which diffusion in the plants depends.

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Diffusion is a phenomenon explaining movement of substances from its higher concentration to its lower concentration. In plants, diffusion of gases occurs. 

Factors affecting diffusion are:-

(i) Concentration gradient:- More steeper the concentration gradient, greater will be the diffusion. 

(ii) Temperature:- Diffusion rate increase with increase in the temperature because speed of ions increases. 

(iii) Size of molecules:- Molecules with smaller size can diffuse easily as compared to molecules with larger size.

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