Question

what is the main difference in excretory system of single cell and multicellular organism​

Answer 1

Explanation:

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Differentiate between unicellular and multicellular organisms

The unicellular organisms contain a single cell whereas the multicellular organisms contain multiple cells. Unicellular organisms conciliate all the cellular activities by a single cell, while multicellular organisms carry out specific cell activities through a well-defined group of cells.