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| 1. |
In multicellular organism simple diffusion is is not required to meet the energy needs .why |
| Answer» In multicellular organisms such as man, the volume of the human body is big and hence, oxygen cannot diffuse into all the cells of the human body quickly. Diffusion, being a slow process will take a lot of time to circulate oxygen to all the body cells. Hence, diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans | |