Marine protozoans lack contractile vacuole because

Contractile vacuoles help in

Contractile vacuoles help in

Contractile vacuole of Euglena is

Contractile vacuoles help in

Contractile vacuoles help in

When a freshwater protozoan possessing a contractile vacuole is placed in a glass containing marine water, the vacuole will

Amoeba has a contractile vacuole for

Contractile vacuoles in Paramecium are

Contractile vacuole is analogous to