| Autotrophic nutrition | Heterotrophic nutrition | |
| Definition | In this organisms make their own food using the raw materials present in the surroundings. | In this organisms don’t have the ability to make their own food, so they have to consume food from autotrophic sources. |
| Requirements | They require sunlight, gases like oxygen and carbon dioxide, and certain pigments like chlorophyll. | They are completely dependent on the autotrophs. |
| Example | Plants, algae | Humans, cows |
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