Some protozoans have special organelles called contractile vacuoles that continually eliminate excess water from the cell. The presence of these organelles tells you that the environment ________.
A)is isotonic to the protozoan
B)is hypotonic to the protozoan
C)is hypertonic to the protozoan
D)contains a higher concentration of solutes than the protozoan

Question

Quizplus · Accepted Answer

Contractile vacuoles expel excess water that enters the cell due to osmosis, indicating the environment is hypotonic, with a lower concentration of solutes compared to the protozoan.

Some Protozoans Have Special Organelles Called Contractile Vacuoles That Continually