Science, asked by sunildas870pb5v4z, 1 year ago

how does excretion occur in primitive animals?

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Answered by vaishu01

Excretion. Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. ... In unicellular organisms, waste products are discharged directly through the surface of the cell

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