3 How Many Kingdoms? Extant 8 5 3 Extinct 2 Long Time with 1 Multicellular AnimalsMyxozoansProtozoansTracheophytesBryophytesTrue FungiSlime MoldsRed algaeBrown AlgaeGreen AlgaeChrysophytesEuglenoidsArchezoansArchaebacteriaBacteria853Extinct21Long Time withProkaryotes onlyOriginal Cell
4 Bacteria - Eubacteria Ancient fossils 3.5 billion years b.p. Archetype for prokaryotic organismsPhototrophsChemoautotrophsHeterotrophsSaprobesParasites (bacteria benefit, host harmed)Commensals (bacteria benefit, host unharmed)Mutualists (bacteria and host both benefit)Unicellular, colonial, filamentousBacillus, coccus, spirillum
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