Final answer:
Grass is an autotroph that produces its own food through photosynthesis.
Step-by-step explanation:
An autotroph is an organism that can produce its own food through photosynthesis or chemosynthesis. One example of an autotroph is grass. Grass uses sunlight, water, and carbon dioxide to produce glucose, which it uses as a source of energy.
On the other hand, organisms like lion, worm, and clam are heterotrophs, which means they rely on other organisms for their food.
Learn more about Autotrophs