What defines an omnivore?

An omnivore is defined as an organism that eats both plants and animals. This classification reflects their diverse diet, allowing them to obtain essential nutrients from a wide variety of sources. Omnivores play an essential role in ecosystems as they help in controlling populations of both plant and animal species and contribute to energy flow within food webs. Their flexible diet can provide them with survival advantages, especially in environments where food availability may fluctuate.

The other choices describe more specialized diets: organisms that eat only plants are known as herbivores, those that consume only animals are carnivores, and fungi feeders are categorized differently, not as omnivores. Thus, the correct understanding of omnivores is key in studying ecological relationships and animal behavior.