Given the diversity in protist ultrastructure and molecular data, biologists regard the protists as a(n) ____ group, meaning that some are descendants of a common eukaryote ancestor.

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Protists are considered a paraphyletic group because they include some, but not all, descendants of a common eukaryotic ancestor, excluding groups like plants, animals, and fungi.

Given the Diversity in Protist Ultrastructure and Molecular Data, Biologists