One genus of this phylum, Toxocara, commonly infec
One genus of this phylum, Toxocara, commonly infects cats and dogs and can cause visceral larva migrans in humans. One species in this phylum infects the muscles of humans after ingestion of undercooked pork; that parasite causes the disease trichinosis. RNA interference and apoptosis have been extensively studied in a model organism from this phylum. Many members of this phylum are parasitic, such as the pinworm and hookworm. A well-studied model organism belonging to this phylum is C. elegans. For 10 points, name this phylum, which includes roundworms.
One genus of this phylum, Toxocara, commonly infects cats and dogs and can cause visceral larva migrans in humans.
nematoda [or nematodes; accept roundworms until the end of the question]