Unable to synthesize their own organic molecules; must ingest organic carbon molecules, such as carbohydrates and lipids, synthesized by other organisms
Protista
Single-celled eukaryotes; lack cell walls; many are capable of movement; some perform photosynthesis
Single-celled prokaryotic bacteria that contain ribosomal RNA; some live in extreme environments, such as hydrothermal vents or within the guts of animals
Saprotrophs
Feed on non-living organic matter known as detritus; decompose dead or decaying matter and release nutrients in ecosystems
Phyla in Kingdom of Monera
Eubacteria
Archaea
Phyla in Kingdom Protista
Amoebozoa
Ciliophora
Euglenozoa
Oomycota
Phyla in Kingdom Fungi
Ascomycota
Basidiomycota
Blastocladiomycota
Chytridiomycota
Glomeromycota
Neocallimastigomycota
Zygomycota
Heterotrophs
Derive their nutritional carbon and energy by oxidizing organic materials; cannot manufacture their own food
Autotrophs
Can produce their own food using materials from inorganic sources; include photoautotrophs and chemoautotrophs
Photoautotrophs
Make their own energy using light and carbon dioxide via photosynthesis
Chemoautotrophs
Create their own energy and biological materials from inorganic materials
