Solution:
| Diffusion | Facilitated diffusion |
| (i) Diffusion takes place along an osmotic gradient. | (i) Movement is against the osmotic gradient during assisted diffusion. |
| (ii) It is a lengthy procedure. | (ii) It is a quick procedure. |
| (iii) It is not reliant on a biological system to function. | (iii)It is reliant on a living system. |