What type of organisms are nematodes?

Nematodes are classified as roundworms, which distinguishes them from other types of worms. Their cylindrical, elongated body structure is a defining characteristic of this group. Unlike flatworms, which have a flattened body shape, nematodes exhibit a round cross-section, allowing them to thrive in various environments, including freshwater, soil, and marine systems.

This classification into the roundworm category encompasses a diverse range of species, known for their ecological significance and role as both decomposers and parasites in many ecosystems. Furthermore, nematodes possess a complete digestive system with a mouth and anus, which also differentiates them from flatworms that have more simplified digestive structures.

Understanding that nematodes belong to the roundworm category is crucial in taxonomy and ecology since it helps in identifying their ecological roles and interactions in freshwater habitats.