The contractile vacuole is absent in ....... | vedclass

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(B) The contractile vacuole is an organelle involved in osmoregulation and excretion,primarily found in freshwater protozoans to pump out excess water

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Plasmodium

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(B) The contractile vacuole is an organelle involved in osmoregulation and excretion,primarily found in freshwater protozoans to pump out excess water.$Plasmodium$ is an endoparasite that lives in the isotonic environment of the host's blood or cells.Since the osmotic pressure of the host's body fluids is similar to that of the parasite,$Plasmodium$ does not face the problem of excess water intake.Therefore,$Plasmodium$ lacks a contractile vacuole,whereas $Euglena$,$Amoeba$,and $Paramecium$ possess it for osmoregulation.

The contractile vacuole is absent in $......$.

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