How do I tell a protozoan from a fungus or a helminth?

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kdmancuso06 | Middle School Teacher | (Level 1) Adjunct Educator

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Protozoans are of the Kingdom Protista and mostly live in moist and warm environments. They look like an oval Eukaryotic cell under the microscope, but they have a tail. 

Fungus can be recognized because it spurts out from one main source. Fungus look like either strings under the microscope. Fungus are also commonly known as mushrooms. Common skin fungi are atheletes foot ring worms. 

A helminth looks like a curling worm under the microscope. They live mostly as parasites off of human or animal nutrients. For example, tape worms.