autotroph
Definition
Noun: An organism that produces its own food from inorganic substances, using light or chemical energy. Autotrophs form the base of the food chain.
Usage
The term "autotroph" is used in biology and ecology to classify organisms based on their method of nutrition. It is a technical term.
Examples
- Noun:
- Green plants are the most common autotrophs on land.
- In the deep ocean, certain bacteria serve as autotrophs, using chemical energy from hydrothermal vents.
- The ecosystem's stability depends on the productivity of its autotrophs.
Advanced Usage
- "Obligate autotroph": An organism that must use autotrophic nutrition and cannot obtain organic carbon from other sources.
- Cyanobacteria are typically obligate autotrophs.
- Primary producer: This is a functional synonym often used in ecology to describe an autotroph's role in an ecosystem.
- Autotrophs, or primary producers, convert solar energy into biomass.
Variants and Related Words
- Autotrophic (adj): Relating to or being an autotroph.
- Plants have autotrophic nutrition.
- Autotrophy (n): The condition of being autotrophic; the process by which autotrophs produce food.
- Photosynthesis is a form of autotrophy.
- Photoautotroph (n): A specific type of autotroph that uses light energy (e.g., plants, algae).
- A tree is a photoautotroph.
- Chemoautotroph (n): A specific type of autotroph that uses chemical energy from inorganic compounds (e.g., some bacteria).
- Bacteria near volcanic vents are often chemoautotrophs.
Synonyms
- Producer (in ecological context)
- Primary producer
Antonyms
- Heterotroph (n): An organism that cannot synthesize its own food and must consume other organisms.
- Animals and fungi are heterotrophs.
Noun
-
plant capable of synthesizing its own food from simple organic substances
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