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Compare unicellular and multicellular organisms in terms of cellular specialisation and functional complexity, and explain why multicellular organisms require a hierarchical organisation.
In unicellular organisms, all life functions are carried out by, whereas multicellular organisms havethat perform specific functions. Unicellular organisms usually showin structure, while multicellular organisms displaylevels of organisation. The coordination of cells in multicellular organisms allows the formation of, enabling complex physiological processes and efficient survival..