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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.
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
Kingdom ProtistaGeneral CharacteristicsGrowth pattern – unicellular (most), colonial, or
multi-cellular / filamentous
Kingdom ProtistaGeneral CharacteristicsHabitat – watery environments: aquatic
(freshwater or marine), terrestrial (moist), host or vector (parasitic)
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
Kingdom ProtistaGeneral CharacteristicsReproduction
Sexual – many use conjugation (four genetically different offspring produced)
Paramecium conjugation exchange of micronuclei
conjugation tubes
Zygotes develop into thick walled, resistant zygospores.
Alternation of Generations – Multicellular Algae *Draw this on your notes! *
* Mitosis used in every step except formation of spores.
*
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)
Kingdom Protista - Classification
Three large categories/sub-kingdoms based mainly on trophism: animal-likeplant-likefungus-like
Photosynthetic ProtistsSymbioses with
Cnidarians
Some anemones, corals, and jellyfish have symbiotic algae (zooxanthellae )