The organisms that use sunlight to prepare their own food are called [[1]]

Concept: An autotroph is a biological organism that can sustain itself by consuming light, water, carbon dioxide, or other things.

Green plants are autotrophic, meaning they can make their own sustenance through photosynthesis.

Photosynthesis converts solar energy into chemical energy in the form of organic compounds, with oxygen released as a by-product.

Animals, fungi, and a few bacteria are heterotrophic organisms that rely on autotrophs to produce organic chemicals for their sustenance.