Final answer:
An organism that feeds on dead matter is known as a detritivore, which is different from carnivores, herbivores, or omnivores, as they specifically consume detritus, thereby playing a vital role in the ecosystem's nutrient cycle.
Step-by-step explanation:
This organism is categorized as a detritivore, ecologically, because it feeds on dead matter. The term detritivore describes an organism that feeds on dead and decaying organic matter, which is known as detritus. These include dead leaves, animal feces, and other organic debris. Terrestrial detritivores include organisms like earthworms and dung beetles, while aquatic detritivores might include organisms like sea cucumbers and catfish.
Detritivores play a crucial role in the ecosystem by breaking down this dead material, which then contributes to the nutrient cycle and helps maintain the health of the environment. Unlike carnivores that prey on live animals or herbivores that consume live plant material, detritivores are essential for decomposing waste products and dead biological matter.