Contractile vacuole is absent in marine and p | vedclass

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(C) The contractile vacuole is an organelle primarily responsible for osmoregulation in freshwater protozoa.In marine and parasitic environments,the i

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Isotonic condition of internal and external medium

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(C) The contractile vacuole is an organelle primarily responsible for osmoregulation in freshwater protozoa.In marine and parasitic environments,the internal and external media are generally isotonic,meaning the solute concentration is balanced.Since there is no net movement of water into the cell due to osmosis,there is no need for an active mechanism to expel excess water,leading to the absence of the contractile vacuole.

Contractile vacuole is absent in marine and parasitic protozoa because

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