Final answer:
Autotrophs are organisms that produce their own organic compounds from inorganic substances through photosynthesis.
Step-by-step explanation:
Organisms that make their own organic compounds from inorganic substances are called autotrophs. Autotrophs are capable of photosynthesis, a process by which they convert sunlight into energy to synthesize their own food. Plants, algae, and some bacteria are examples of autotrophs.
Learn more about Autotrophs