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Question

In protozoa, like Amoeba and Paramecium, an organ is found for osmoregulation, which is

A
Contractile vacuole
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B
Mitochondria
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C
Nucleus
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D
Food vacuole
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Solution

The correct option is A Contractile vacuole

  • Osmoregulation is the process of regulating the water balance inside the body of protozoans.
  • This is done with the help of contractile vacuoles by pumping water out of the cell.
  • It is absent in marine and parasitic protozoans but presents in freshwater protozoans.
  • In Amoeba and Paramecium, the contractile vacuole is present for the regulation of water balance.

Thus, the correct answer is A.


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