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Kingdom Protista

Some protists...

Question

Some protists possess structures for regulation of their water content. They are

A

Nuclei

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B

Contractile vacuoles

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C

Chromatophores

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D

Membranes

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Solution

The correct option is B Contractile vacuoles
Contractile vacuoles are found in fresh water protozoans and they help in osmoregulation. They expel extra water from fresh water protozoans and prevent cell bursting.

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