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Unformatted text preview: alternation of generations found in plants. Protist life cycles vary from diploid dominant, to haploid dominant. A generalized eukaryote life cycle is shown in Figure 1. The great diversity of form, habitat, mode of nutrition, and life history exhibited by eukaryotes suggests they evolved several times from various groups of prokaryotes. This makes the Protista a polyphyletic group. Eukaryotes are generally larger, have a variety of membrane-bound organelles, greater internal complexity than prokaryotic cells, and has a secialized method of cell division ( meiosis ) that is a prelude to true sexual reproduction. Protists might be viewed as a group from which the other eukaryotic kingdoms evolved, as shown by Figure 2....
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