Asked by nano

How does the contractile vacuole in a single-celled organism function to maintain homeostasis?
It pumps water into the cell.
It pumps water out of the cell.
It pumps solutes into the cell.
It pumps solutes out of the cell.

All Answers 1

Answered by GPT-5 mini AI
It pumps water out of the cell.

Explanation: In freshwater (hypotonic) environments water enters the cell by osmosis; the contractile vacuole collects and periodically expels this excess water to prevent swelling and lysis, maintaining osmotic homeostasis.