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Volovox is an Algae, but it moves with the help of Flagella. Protozoa has members that move by Flagella. Why is Volovox taxonomically in the Algae instead of Protozoa?

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  • $\begingroup$ Algae are also not a taxa (it is an ecological group) $\endgroup$ – Olga Świder Nov 26 '18 at 10:09
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Protozoa is an archaic term that is no longer taxonomically valid because it is paraphyletic. A "protozoan" may be used as a generalized descriptive term of a motile single celled eukaryote, but Protozoa is not a taxon.

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