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Protozoa usually range from 10μm-50μm but can grow up to 1mm. Thus, they are usually observed and classified using a microscope.
Protozoa usually range from 10μm-50μm but can grow up to 1mm. Thus, they are usually observed and classified using a microscope.
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Not all protozoa are harmful. For example, the [[The Rumen - Anatomy & Physiology|rumen]] of ruminants and the [[Caecum - Anatomy & Physiology|caecum]] and [[Colon - Anatomy & Physiology|colon]] of horses are full of symbiotic protozoa.
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Not all protozoa are harmful. For example, the [[Rumen - Anatomy & Physiology|rumen]] of ruminants and the [[Caecum - Anatomy & Physiology|caecum]] and [[Colon - Anatomy & Physiology|colon]] of horses are full of symbiotic protozoa.
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