Which type of organisms captures energy from sunlight or chemical energy to make organic molecules?

• A. Heterotrophs
• B. Decomposers
• C. Autotrophs
• D. Carnivores

Answer: (C)

Autotrophs are organisms that capture energy from sunlight or chemical energy to build organic molecules from inorganic carbon. Through photosynthesis, plants, algae, and some bacteria use sunlight to convert carbon dioxide and water into glucose, storing energy in chemical bonds. In environments without light, certain bacteria perform chemosynthesis, using energy from chemical reactions to make organic molecules. These producers form the base of a food web, supplying energy and organic matter for all other organisms. Heterotrophs rely on organic molecules made by others, decomposers break down dead material, and carnivores eat other animals.