Plants and Animals

Pinworms have smooth bodies, bilateral symmetry, and complete digestive tracts. What type of animal are they?

Pinworm, also called seat worm, or threadworm (species Enterobius, or Oxyuris, vermicularis), worm belonging to the family Oxyuridae in the order Ascaridida (phylum Nematoda). Pinworms are common human intestinal parasites, especially in children

The pinworm (species Enterobius vermicularis), also known as threadworm (in the United Kingdom and Australia) or seatworm, is a parasitic worm. It is a nematode (roundworm) and a common intestinal parasite or helminth, especially in humans.