Which of the following is an example of protozoa?

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Multiple Choice

Which of the following is an example of protozoa?

Explanation:
Protozoa are single-celled, eukaryotic organisms that can live as parasites in animals. Giardia is a classic intestinal protozoan parasite; it exists as cysts in the environment and as trophozoites in the host, causing giardiasis. This makes Giardia a straightforward example of a protozoan parasite. The other options are not protozoa: two are nematodes (roundworms), which are multicellular worms, and while Amoeba is also a protozoan, Giardia is the commonly emphasized example in veterinary parasitology and is the one highlighted in this item.

Protozoa are single-celled, eukaryotic organisms that can live as parasites in animals. Giardia is a classic intestinal protozoan parasite; it exists as cysts in the environment and as trophozoites in the host, causing giardiasis. This makes Giardia a straightforward example of a protozoan parasite. The other options are not protozoa: two are nematodes (roundworms), which are multicellular worms, and while Amoeba is also a protozoan, Giardia is the commonly emphasized example in veterinary parasitology and is the one highlighted in this item.

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