JAMB - Biology (2007 - No. 39)
Use the diagram above to answer this question.The part labelled lV is responsible for
osmoregulation
respiration
ingestion
locomotion
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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.