JAMB - Biology (2007 - No. 39)
Use the diagram above to answer this question.The part labelled lV is responsible for
osmoregulation
respiration
ingestion
locomotion
Explication
The part labelled IV is the contractile vacuole of the paramecium(See diagram).
The contractile vacuole's function is to remove excess water from a cell through a process called osmoregulation. This organelle helps maintain the cell's water balance and protects the cell from rupturing.