QUIZ 1. What is not a characteristic of protozoans? a. They are motile b. They do not participate in photosynthesis c. They are unicellular d. They product toxins Answer: d. Each of these is a typical characteristic of protozoans except that they do not generally produce any toxins. 2. When talking about protozoans, what is a trophozoite? a. A protozoan that is metabolically inactive. b. A protozoan in the growth and feeding phase. c. The larval form of a larger protozoan. d. The protozoan that is encased in a cyst. Answer: b. A protozoan that is in its growth and feeding phase is referred to as a trophozoite. When it undergoes encystment, it becomes a metabolically inactive cyst. 3. What is the main purpose of the cytoproct in certain types of protozoans? a. Immunity b. Motility c. Cell structure d. Waste removal Answer: d. The cytoproct is a specialized structure with regard to certain protozoans that is involved in the exocytosis of waste products for the organism.
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