JAMB - Biology (2018 - No. 44)
What is the function of contractile vacuole in paramecium?
Produces Enzymes
Gets rid of excreta
Stores and digest food
Gets rid of excess water
Giải thích
Osmoregulation. Paramecium and amoeba live in fresh water. Their cytoplasm contains a greater concentration of solutes than their surroundings and so they absorb water by osmosis. The excess water is collected into a contractile vacuole which swells and finally expels water through an opening in the cell membrane.
: Excretion of water in Paramecium is carried out by the Contractile vacuoles