kingdom Protoctista


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Related to kingdom Protoctista: kingdom Plantae, kingdom Prokaryotae, kingdom Monera, kingdom Fungi
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Noun1.kingdom Protoctista - in most modern classifications, replacement for the Protista; includes: Protozoa; Euglenophyta; Chlorophyta; Cryptophyta; Heterokontophyta; Rhodophyta; unicellular protists and their descendant multicellular organisms: regarded as distinct from plants and animals
protoctist order - the order of protoctists
protoctist - any of the unicellular protists
division Protista, Protista - eukaryotic one-celled living organisms distinct from multicellular plants and animals: protozoa, slime molds, and eukaryotic algae
protoctist family - any of the families of Protoctista
protoctist genus - any genus of Protoctista
phylum Protozoa, Protozoa - in some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers
division Heterokontophyta, Heterokontophyta - algae having chlorophyll a and usually c, and flagella of unequal lengths; terminology supersedes Chrysophyta in some classifications
Chrysophyta, division Chrysophyta - mostly freshwater eukaryotic algae having the chlorophyll masked by brown or yellow pigment; yellow-green and golden-brown algae and diatoms: Xanthophyceae, Chrysophyceae, Bacillariophyceae; some classification systems superseded or subsumed by Heterokontophyta
division Euglenophyta, Euglenophyta - free-swimming flagellate algae
Chlorophyta, division Chlorophyta - large division of chiefly freshwater eukaryotic algae that possess chlorophyll a and b, store food as starch, and cellulose cell walls; classes Chlorophyceae, Ulvophyceae, and Charophyceae; obviously ancestral to land plants
division Rhodophyta, Rhodophyta - lower plants; mostly marine and littoral eukaryotic algae
Cryptophyta, phylum Cryptophyta - a phylum in the kingdom Protoctista
kingdom - the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
References in periodicals archive ?
These authors include the foraminifera in the Kingdom Protoctista, although recent classifications assign them to the Rhizaria.
I agree that a resolution to the number of kingdoms (or domains) is indeed possible, and that sorting out the evolutionary relationships among members of tire Kingdom Protoctista will be an essential step in doing so.