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Protista


Protista
A eukaryote (IPA:
[juːˌkarɪəʊt]
), is an organism with a complex cell or cells, in which the genetic material is organized into membrane-bound nucleus/nuclei.
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Protista
Eukaryotes are organisms with complex cells, in which the genetic material is organized into membrane-bound nuclei.
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Protista
The most ancient eukaryotic kingdom, protists include a variety of eukaryotic body (single-celled-colonial-multicellular?) and nutritional heterotrophic, autotrophic, and both) forms.
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Protista: a kingdom that includes protozoa, one-celled algae, and slime molds.
protocells: the first cells.
protons: positively charged particles within the nucleus of an atom.
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Protista The kingdom whose members are characterized by being eukaryotic and unicellular or colonial.
proto-oncogene. See oncogene.
protochordates Chordates that lack a backbone.
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Radiolaria. Protistan phylum, whose members are planktonic and secrete an often elaborate siliceous test
Radula. A belt of teeth, found in gastropods and chitons. Used for feeding.
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The name Protista means "the very first", and some of the 80-odd groups of organisms that we classify as protists may well have had long, independent evolutionary histories stretching as far back as 2 billion years.
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In 1969 Whittaker proposed a "five kingdom" system in which three kingdoms were added to the animals and plants: Monera (bacteria), Protista, and Fungi. Whittaker defined the kingdoms by a number of special characteristics.
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Ciliophora Division (Phylum) of organisms within Kingdom Protista which use their numerous cilia for locomotion
(cili = eyelash; phora = bear carry)
CircadianRhythm having an activity cycle of about 24 hours
(circa = about; dies = day) ...
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: A heterogeneous group of aquatic, unicellular, colonial or multicellular, eukaryotic and photosynthetic organisms. They belong to the Kingdom
Protista
and include the multicellular red (
rhodophyte
), green and brown (kelp) algae.
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