Final answer:
Heterotrophs are organisms that cannot perform photosynthesis and rely on obtaining food from other organisms.
Step-by-step explanation:
The statement 'All of the above are true' is NOT true of heterotrophs. Heterotrophs are organisms that cannot produce their own food through photosynthesis, so they are incapable of photosynthesis. While heterotrophs do include all animals, not all heterotrophs are animals. The food for heterotrophs does come from other organisms, but it does not necessarily trace its origins back to autotrophs.
Learn more about Heterotrophs