an organism that lives off autotrphs
Organisms are divided into autotrophs and heterotrophs according to their energy pathways. Autotrophs are those organisms that are able to make energy-containing organic molecules from inorganic raw material by using basic energy sources such as sunlight. Plants are the prime example of autotrophs, using photosynthesis. Diffen › Science › Biology. Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition. Phototrophs use light as an energy source, while chemotrophs utilize electron donors as a source of energy, whether from organic or inorganic sources; however in the case of autotrophs, these electron donors come from inorganic chemical sources. Such chemotrophs are lithotrophs. Phototrophs use light as an energy source, while chemotrophs utilize electron donors as a source of energy, whether from organic or inorganic sources; however in the case of autotrophs, these electron donors come from inorganic chemical sources. A heterotroph is any living organism that obtains its energy from carbohydrates and other organic material. In simpler terms, heterotrophs are organisms that cannot produce their own food, therefore they eat other organisms that CAN produce their own food. All animals and most bacteria and fungi are heterotrophic. Plants are autotrophs; the only nutrients they require are carbon dioxide from the air, and water and minerals from the soil. Specifically, plants are photoautotrophs, organisms that use light as a source of energy to synthesize lipids, proteins, and other organic substances. Herbivores, omnivores, and carnivores. Definition. An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. Heterotrophs cannot produce organic compounds from inorganic sources and therefore rely on consuming other organisms in the food chain. For the most part, autotrophs often make their own food by using sunlight, carbon dioxide, and water to form sugars which they can use for energy. Some examples of autotrophs include plants, algae, and even some bacteria. They do not need a living source of energy or organic carbon. Autotrophs can reduce carbon dioxide to make organic compounds for biosynthesis and also create a store of chemical energy. Most autotrophs use water as the reducing agent, but some can use other hydrogen compounds such as hydrogen sulfide. An example of an  autotroph is algae. A heterotroph is an organism that receives its  food from other sources. It is a multicellular or unicellular  organism. Organisms that are consumers or decomposers are  heterotrophs. A parasite is also a heterotroph. A parasite feeds  off other organisms for its food.
Autotrophs are those organisms that are able to make energy-containing organic molecules from inorganic raw material by using basic energy sources such as sunlight. Plants are the prime example of autotrophs, using photosynthesis.