Freshwater Protozoans React to A/an ________ Environment by Removing Water

Question

Freshwater protozoans react to a/an ________ environment by removing water through ________.
A)hypertonic; turgor pressure
B)hypotonic; turgor pressure
C)isotonic; a contractile vacuole
D)hypertonic; a contractile vacuole
E)hypotonic; a contractile vacuole

Accepted Answer

Freshwater protozoans live in a hypotonic environment where water tends to enter the cell. They use a contractile vacuole to expel excess water and maintain osmotic balance.