Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 53

nematode - Morphology, Free-living species, Parasitic species, Phylogeny, Trivia

An unsegmented worm, typically circular in section; body covered with cuticle; head end with terminal mouth, surrounded by lips and three rings of sense organs; abundant in aquatic sediments, in soil, and as parasites of plants and animals; c.12 000 species described; also known as eelworms, roundworms, or pinworms. (Phylum: Nematoda.)

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