Freshwater protozoans pump out excess water by a special structure called:
Correct answer: B. Contractile vacuole
- A. Oral groove
- B. Contractile vacuole
- C. Vesicle
- D. Vacuole
Explanation
The organelle used to remove excess water in protozoa is a contractile vacuole. Water is able to move through the cellular membrane of protozoa by osmosis.
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