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Question

In Amoeba, osmoregulation occurs by


A

Hyaloplasm

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B

Contractile vacuole

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C

Ectoplasm

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D

Pseudopodia

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Solution

The correct option is B

Contractile vacuole


Amoeba has a contractile vacuole for osmotic equilibrium. The contractile vacuole slowly fills with water from the cytoplasm and, while fusing with the cell membrane, it quickly contracts releasing water to the outside by exocytosis. This process regulates the amount of water present in the cytoplasm of Amoeba.


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