Topic summary
Heterotrophy
Extracted from the Wikipedia article Heterotroph.
Origin and diversification
Heterotrophs are currently found in each domain of life: Bacteria, Archaea, and Eukarya. Domain Bacteria includes a variety of metabolic activity including photoheterotrophs, chemoheterotrophs, organotrophs, and heterolithotrophs. Within Domain Eukarya, kingdoms Fungi and Animalia are entirely heterotrophic, though most fungi absorb nutrients through their environment. Most organisms within Kingdom Protista are heterotrophic while Kingdom Plantae is almost entirely autotrophic, except for myco-heterotrophic plants. Lastly, Domain Archaea varies immensely in metabolic functions and contains many methods of heterotrophy.