Answer :
Final answer:
The contractile vacuole in a paramecium removes excess water to maintain osmotic balance in hypotonic environments.
Explanation:
Contractile vacuole is the structure in a paramecium that removes excess water to maintain osmotic balance.
It functions by absorbing water via canals from the cytoplasm, pumping it into the vacuole, and expelling it through a pore to prevent the cell from bursting in hypotonic environments.
This mechanism is crucial for freshwater protists like paramecia to regulate water intake efficiently.
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