Respuesta :
Type of body cavity - The body cavity of Annelids is a true coelom while in Nematodes it is a pseudo-coelom.
A number of muscle layers in the body wall - Annelids have longitudinal and circular muscles, whereas Nematodes have only longitudinal muscles.
Presence of segmentation - Annelids have segmented bodies, whereas the body of Nematode is not segmented.
The shape of worm in cross-sectional view - Nematodes are circular in cross-section whereas Annelids are cylindrical.
The nematodes or roundworms comprise the phylum Nematoda, with plant-parasitic nematodes otherwise called eelworms. They are a different creature phylum possessing a wide scope of conditions. Annelids are referred to normally as sectioned (ringed) worms. A few normal names for additional notable annelids incorporate night crawlers, sandworms, ragworms, bristle worms, and parasites. Annelid classes incorporate Oligochaeta, Hirudinea, Polychaeta, and Archiannelida. Polychaeta is a paraphyletic class of commonly marine annelid worms, usually called bristle worms or polychaetes. Each body fragment has a couple of beefy distensions called parapodia that bear many fibers, called chaetae, which are made of chitin.
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