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Taxonomy of Protista. A modern non-hierarchical interpretation of the phylogeny of eukaryotes, including protists. A protist ( / ˈproʊtɪst /) is any eukaryotic organism (one with cells containing a nucleus) that is not an animal, plant, or fungus.
- Diversity of Protists
- Which Classification?
- How Did We Get Into This Mess?
- Toward A Solution
- Concluding Remarks
- Acknowledgments
Adl et al. (2005) defined protists as eukaryotic organisms with unicellular, colonial, filamentous, or parenchymatous organization that lack vegetative tissue differentiation, except for reproduction. Metazoa Haeckel 1874, Plantae Haeckel 1866, and some Phaeophyceae Hansgirg 1886 are recognized as being truly multicellular. The current number of de...
For historical reasons, protists traditionally fell under the jurisdiction of the ICBN if they were “algae” or “fungi” and under the jurisdiction of the ICZN if they were “protozoa.” This system has been unraveling for several decades, as a number of groups were described in parallel by zoologists (ICZN) and by botanists (ICBN) each with distinct n...
The purpose of classification is to arrange biological diversity in such a way as to facilitate communication and accurate information retrieval. This system must operate within a phylogenetic context and must be able to accommodate modification while retaining name stability. This is a particularly onerous task as there are millions of phylogeneti...
It has been argued that the traditional codes can be revised to accommodate some of the problems mentioned above, and that many of the identified problems are not serious (Barkley et al., 2004). That may be true for extant Animalia and Plantae, although some disagree (Cantino, 2004), but for protists that is simply not the case. An example of the m...
The new classification of eukaryotes reflects our current knowledge of protist evolution, has reintroduced some formality with group names and their authority, and provides a point of reference for protist systematics (Adl et al., 2005). Unresolved cases remain where relationships between clades are unclear (Adl et al., 2005; Keeling et al., 2005; ...
Several colleagues have contributed through responding to emails or in conversations at conferences and elsewhere. These include Robert A. Andersen, Louise Lewis, Richard M. McCourt, Robert Fensome, Timothy Y. James, Laura Katz, Georges Merinfeld, and Gary Saunders.
- Sina M. Adl, Brian S. Leander, Alastair G. B. Simpson, John M. Archibald, O. Roger. Anderson, David ...
- 2007
A protist ( / ˈproʊtɪst / PROH-tist) or protoctist is any eukaryotic organism that is not an animal, land plant, or fungus. Protists do not form a natural group, or clade, but are a polyphyletic grouping of several independent clades that evolved from the last eukaryotic common ancestor .
Apr 28, 2017 · Protist Definition. Protists are a group of loosely connected, mostly unicellular eukaryotic organisms that are not plants, animals or fungi. There is no single feature such as evolutionary history or morphology common to all these organisms and they are unofficially placed under a separate kingdom called Protista.
This phenomenon, called convergent evolution, is one reason why protist classification is so challenging. The emerging classification scheme groups the entire domain Eukaryota into six “supergroups” that contain all of the protists as well as animals, plants, and fungi that evolved from a common ancestor (Figure 1).
May 15, 2024 · protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms. They may share certain morphological and physiological characteristics with animals or plants or both. The term protist typically is used in reference to a eukaryote that is not a true animal, plant, or fungus or in reference to a eukaryote ...
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Protista; Protozoa; Biological classification: Quiz 1 ... Nomenclature and Taxonomy Get 3 of 4 questions to level up! ... What makes us animals (Opens a modal)
