Describing organisms that produce their own food from inorganic substances, typically through photosynthesis or chemosynthesis. These self-feeding organisms form the foundation of most food webs by converting simple compounds into complex organic molecules.
From Greek 'autos' meaning 'self' and 'trophe' meaning 'nourishment' or 'food.' The term emerged in the early 20th century as biologists began understanding how different organisms obtain energy and nutrients.
Autotrophic organisms are literally the Earth's food factories! Every bite of food you've ever eaten can be traced back to an autotroph, whether it's a plant that photosynthesized sunlight or bacteria that chemosynthesized chemicals from deep ocean vents.
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