| Autotroph | Heterotroph |
|---|---|
| $1$. Organisms that prepare their own food using simple inorganic substances. | $1$. Organisms that depend on other organisms for their food. |
| $2$. They contain chlorophyll to perform photosynthesis. | $2$. They lack chlorophyll and cannot perform photosynthesis. |
| $3$. Example: Green plants and some bacteria. | $3$. Example: Animals,fungi,and most bacteria. |
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