AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Organisms that use simple inorganic sources like carbon dioxide and water for nutrition are called autotrophs.
The passage directly states: "Some organisms use simple food material obtained from inorganic sources in the form of carbon dioxide and water. These organisms, the autotrophs, include green plants and some bacteria." For a fill-in-the-blank 1-mark question, the single word autotrophs is the complete answer required.