Assertion: paramecium | /r/HasAspect | a contractile vacuole
Facets:
Source sentences:
text: It also has a contractile vacuole that removes water so that the cell does not burst due to the excessive water that can freely enter the membrane due to its semi-permeable nature.
text: Paramecium has two contractile vacuoles, one at each end, which fill and contract alternately.