Producers, or photoautotrophs , make organic food molecules (like sugars) from carbon dioxide and water using light energy, and in the process they also release oxygen.

Quick Scoop

  • Photoautotrophs use sunlight to power photosynthesis , turning carbon dioxide and water into energy-rich carbohydrates such as glucose.
  • The organic molecules they produce include:
    • Carbohydrates (sugars, starches, cellulose).
* Fats (lipids).

* Proteins.
  • These molecules become:
    • The organism’s own food and body material (biomass).
* The energy source for all higher levels in a food chain, which is why producers are called primary producers.
  • A key “bonus product” is oxygen, released as a by-product of photosynthesis, which helps sustain aerobic life on Earth.

In simple classroom terms: producers/photoautotrophs produce food (energy- rich organic matter) and oxygen that support almost all life in an ecosystem.

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