Learn the difference between autotrophs and heterotrophs, the two types of organisms based on their mode of nutrition. Autotrophs are producers that make their own food, while heterotrophs are consumers that depend on others for food. Autotrophs and Heterotrophs Autotrophs form the base of the food chain , producing energy-rich organic compounds that provide nourishment to other organisms. They also release oxygen through photosynthesis, contributing to the atmosphere’s oxygen content. Autotrophs examples include plants, algae, and certain bacteria . Autotrophs play a vital role in the carbon cycle, producing oxygen as a byproduct of photosynthesis and serving as primary producers in food chains.