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Best Answer: Domain ... Population and domain are not technically taxonomic groups. The animal kingdom is the most inclusive taxonomic group. The second most ...
Organisms composed of eukaryotic cells are divided into 4 main groups: 1  Protista are mostly unicellular or colonial eukaryotes. 2  They may be either photosynthetic autotrophs or heterotrophs. 3  This is a very diverse group that is actually composed of multiple kingdoms. Like colonial organisms, multicellular organisms are composed of many cells. 2  However, in a multicellular organism there is considerable specialization and division of labor among the cells.