What type of organisms could be categorized as detritivores?

Detritivores are organisms that play a crucial role in the ecosystem by breaking down dead organic matter, such as fallen leaves, dead animals, and other decomposing materials. They primarily feed on this detritus, contributing to nutrient cycling and soil formation.

Bacteria and earthworms are quintessential examples of detritivores. Bacteria decompose organic material at a microscopic level, breaking it down into simpler substances that can be used by plants. Earthworms consume organic matter in the soil, processing it through their bodies and enriching the soil as they excrete nutrient-rich castings. This relationship underscores the importance of detritivores in maintaining healthy ecosystems by facilitating decomposition and nutrient availability.

Other options do not fit the classification of detritivores. Herbivores and carnivores primarily consume living plants or animals, while plants and fungi engage in different ecological roles (with fungi sometimes acting as decomposers). Insects and reptiles also tend to have varied diets, and while some insects can be detritivores, it is not universally true for all insects or reptiles. Thus, bacteria and earthworms distinctly exemplify true detritivores in their feeding habits and ecological functions.