Do all ciliates have contractile vacuoles?

Not everyone. The contractile vacuoles perform the function of removing excess fluid from the body to prevent cell destruction. The vacuole socrum is found in ciliates living in fresh water bodies, since a hypertonic solution is obtained in their organisms in comparison with the environment. According to the law of osmosis, water moves towards a higher concentration of solute, that is, it constantly enters the cell. And it must be taken out so that it does not burst.



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