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Kingdom Protista includes chrysophytes, dinoflagellates, euglenoids, slime moulds and protozoans. These organisms are single-celled eukaryotes and are primarily aquatic.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
SAR acronym denotes monophyletic megaassembly of three major protistan groups confirmed by multigene phylogenomic analyses and shared rare genomic characters: Stramenopiles also called heterokonts possessing tripartite tubular hairs on longer flagellum, Alveolates possessing cortical alveoli beneath plasma membrane, and Rhizaria extending filose pseudopodia for feeding and test formation. Stramenopiles include diatoms, brown algae, oomycetes; Alveolates include ciliates, apicomplexans, dinoflagellates; Rhizaria include foraminifera, radiolaria, cercozoans. Together SAR comprises greater than h
Ref: Burki et al. 2008 SAR clade Stramenopiles Alveolates Rhizarians; Adl et al. 2012 protist classification SAR supergroup monophyletic
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