Respuesta :

Answer:

As paramecium lives in fresh water, it has the problem of water being transported into it because of osmosis.

Explanation:

osmosis is the movement of any solvent through a selectively permeable membrane into an area of higher solute concentration, the result of which will be an equalizing of solute concentration on either side of the membrane.

Answer:

. Their cytoplasm contains a greater concentration of solutes than their surroundings and so they absorb water by osmosis

Explanation:

Paramecium and amoeba live in fresh water.The excess water is collected into a contractile vacuole which swells and finally expels water through an opening in the cell membrane.