Final answer:
Diffusion plays a crucial role in supplying oxygen to cells in organisms, with specialized respiratory tissues aiding in efficient oxygen transport.
Explanation:
Diffusion is not only important for gaseous exchange but also plays a vital role in supplying oxygen to cells in organisms through the cell membrane. In unicellular organisms, diffusion across the cell membrane is sufficient to provide oxygen to the cell, ensuring cellular respiration.
Larger organisms have evolved specialized respiratory tissues like gills and lungs, accompanied by complex circulatory systems, to transport oxygen efficiently throughout their bodies. The surface area-to-volume ratio and diffusion distances impact the efficiency of oxygen uptake, highlighting the significance of diffusion for organisms of varying sizes.
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