Choose the correct answers from the alternatives given.
What is the main function of contractile vacuoles in protozoa

Osmoregulation

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Excretion

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Reproduction

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Food regulation

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Solution

The correct option is A Osmoregulation
The pumping water out of the cell through contractile vacuole and the process is called osmoregulation, protozoa live in freshwater and consist of the contractile vacuole which collects and pumps outer water.
So, the correct option is 'Osmoregulation'.

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