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This Concept Map, created with IHMC CmapTools, has information related to: Protists- Group 2, Much of protistan diverisity Is caused by Endosymbiosis, Play key ecological roles in communities Key Role Symbiotic Role, Genetic variation Through Conjugation, Mitochondria and plastids are derived from prokaryotes through Structure, Sexually diverse Types The sexual process of meiosis and syngamy, Nutritionally diverse types Photoautotrophs, Forams Found in Ocean & fresh water, Forams Tests in marine sediments form Extensive fossil record, Red algae and green algae underwent Secondary Endosymbiosis, Stipe ???? Supports leaf- like blades, Golden algae Most are Unicellular, Supergroup Archaeplastida Clade 2 Green Algae, Opisthokonts Consist of Animals, Diatoms Have Unicellular algae w/ unique 2 part, glass-like wall of hydrated silica, Ciliates ???? Genetic variation, Holdfast ???? Root-like & anchors stipe, Can increase the concentrations of these elements in aquatic communities For Example Fertilizer is applies to a field Some may be washed away by rainfall into a river that drains into a lake or ocean., Complex multicellular life cycle ???? Alternation of generations, Psudopodia Is Thread-like, Protists Excavated groove on one side of body Supergroup Excavata