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microbiology Protozoa are a polyphyletic group .What does that term mean?What common characteristics do Protozoa have that...

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Biology

microbiology

Protozoa are a polyphyletic group .What does that term mean?Whatcommon characteristics do Protozoa have that facilitates informallygrouping them together?There are four pathogenic protozoan groups,based on their method of motility.Briefly describe these groups,give an example of a common parasite within each group, the diseasethey cause and their reservoirs / source. minimum 150 words.

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Polyphyletic group means group of organisms derived from common evolutionary ancestor but does not suitable for placing them in the same taxon Simply their members come from multiple ancestral sources regardless of showing same characteristics Except ciliates ciliophora other subclasses of protozoans are polyphyletic group Protozoans are single celled eukaryotes placed under kingdom Protista They are heterotrophs and feeds on organic matter like microbes or other organic tissues of debris They live as parasites or predators As they show motility predation but lack of cell wall    See Answer
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