Question

In single celled organisms diffusion is sufficient to meet all their requirements of food exchange of gases or removal of wastes but it is not in case of multuicellular organiss or removal of wastes but it is not in case of multuicellular organism explain the organism

Answer 1

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Diffusion is a very slow process so it can be useful for requirement of unicellular Oraganism due to their extreme small size while multicellular organism has very large body design and size due to this diffusion cannot meet requirements of multicellular organism