Organism depends on other organisms for food. Heterotrophs vs Autotrophs. Autotrophs make their own food using photosynthesis. Photosynthesis is a process which utilizes carbon dioxide and water to produce sugars with the aid of sunlight. Making and Using Food. Autotroph is a coordinate term of heterotroph. The difference between an autotroph vs heterotroph is in the way each gets its energy. Most animals are heterotrophic, whereas there are few autotrophic animals, perhaps even none depending on the state of the debate. Main Differences Between Autotroph vs Heterotroph. 14 Differences between Autotroph and Heterotroph Autotroph Definition. Autotrophs: Organisms that are able to form nutritional organic substances from simple inorganic substances such as carbon dioxide are referred to as autotrophs. Carnivores that eat meat and omnivores that eat all types of organisms are placed next in the trophic level. The main difference between autotrophs and heterotrophs in point form is that autotrophs make their food while heterotrophs cannot make their food. There are many differences, but in terms of energy, it all starts with sunlight. Thus, heterotrophs are at the secondary or tertiary levels of the food chains. Examples of autotrophic organisms Autotrophs are at the primary level of food chains. Autotrophs are considered as the producers of the food chain. Heterotrophs: Herbivores, omnivores, and carnivores are the examples. The main difference between autotrophic organisms and heterotrophic organisms is that the former produce their own food, while the latter rely on other organisms for food. They do not require organic carbon as a living source of energy. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Heterotrophs: Heterotrophs are either photoheterotrophs or chemoheterotrophs. Most living organisms are heterotrophs. So, the main differences between autotrophs and heterotrophs are : i) Autotrophs can prepare their own food, whereas heterophs depend on the autotrophs for food. Heterotrophs are unable to fix inorganic carbons and utilize organic carbon as the carbon source. Technically, the definition is that autotrophs obtain carbon from inorganic sources like carbon dioxide (CO2) while heterotrophs get their reduced carbon from other organisms. Photoheterotroph – These heterotrophs use light for energy but cannot use carbon dioxide as their carbon source. Hence, both syntheses are known as primary synthesis. N.p., 2017. Home » Science » Biology » Difference Between Autotrophs and Heterotrophs. Food is generally prepared at day time. Autotrophs can prepare their food on their own. Consider our field. Main Difference The key difference between heterotrophs and autotrophs is that the heterotrophs are the organisms that cannot create their own food and depend on the organic matter produced by other organisms while autotrophs are the organisms that can make their own food. Review Chapter 6 Explain the difference between an autotroph and a heterotroph. Main Difference. An autotroph is a group of organisms capable of producing their own food by utilizing various... Heterotroph Definition. En.wikipedia.org. Heterotrophs that depend on autotrophs and other heterotrophs for their energy level are placed next on the food chain. DISTINGUISH between consumers,detritivores and saprotrophs Consumer: An organism that ingests other organic matter that is living or recently killed. They eat other organisms to get proteins and energy. The main difference between autotrophs and heterotrophs is in their carbon source. 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