Kingdom (?) Protista General Characteristics Most diverse kingdom, contains organisms that cannot be...
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![Page 1: Kingdom (?) Protista General Characteristics Most diverse kingdom, contains organisms that cannot be classified in other kingdoms Eukaryotes with little.](https://reader030.fdocuments.net/reader030/viewer/2022032709/56649ede5503460f94bef1cd/html5/thumbnails/1.jpg)
Kingdom (?) Protista(ch. 25)
Use your notes chart to summarize info and list examples.
You only need to know the phyla and specific examples in your chart and lab.
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Kingdom (?) ProtistaGeneral CharacteristicsMost diverse kingdom, contains
organisms that cannot be classified in other kingdoms
Eukaryotes with little or no cell specialization
Trophism - Hetero- or autotrophic
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Kingdom ProtistaGeneral CharacteristicsGrowth pattern – unicellular (most), colonial, or
multi-cellular / filamentous
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Kingdom ProtistaGeneral CharacteristicsHabitat – watery environments: aquatic
(freshwater or marine), terrestrial (moist), host or vector (parasitic)
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Kingdom ProtistaGeneral CharacteristicsReproduction
Asexual: many use binary fission, some use multiple fission (more than two offspring produced); fragmentation & regeneration
Binary fission video in Euglena – Utube
Binary fission video – Paramecium - UTube
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Kingdom ProtistaGeneral CharacteristicsReproduction
Sexual – many use conjugation (four genetically different offspring produced)
Paramecium conjugation exchange of micronuclei
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conjugation tubes
Zygotes develop into thick walled, resistant zygospores.
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Alternation of Generations – Multicellular Algae *Draw this on your notes! *
* Mitosis used in every step except formation of spores.
*
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Kingdom ProtistaEvolutionSimilarities to bacteria suggest evolution from
prokaryotes through endosymbiosis or in-foldingResemble the likely ancestors of animals, plants, and
fungi, which are multicellular and have a higher degree of cell specialization (many tissues & organs)
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Kingdom Protista - Classification
Three large categories/sub-kingdoms based mainly on trophism: animal-likeplant-likefungus-like
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Photosynthetic ProtistsSymbioses with
Cnidarians
Some anemones, corals, and jellyfish have symbiotic algae (zooxanthellae )