Which structure is responsible for maintaining the amount of water in amoeba?
AContractile vacuole
BFood vacuole
CCytoplasm
DPlasma membrane
Answer:
A. Contractile vacuole
Read Explanation:
The structure responsible for maintaining the water balance (osmoregulation) in an amoeba is the contractile vacuole.
Amoeba lives in freshwater environments where the concentration of solutes outside the cell is lower than inside (hypotonic environment). Due to osmosis, water constantly enters the amoeba's cytoplasm.
The contractile vacuole is a specialized organelle that actively collects this excess water and periodically expels it from the cell.
This process of pumping out water is crucial for osmoregulation, preventing the amoeba from swelling and bursting.
