An animal with bilateral symmetry, a pseudocoelom, a tubular digestive system, and a multilayered cuticle is most likely a(n)

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The characteristics described match those of a nematode, also known as a roundworm. Nematodes have bilateral symmetry, a pseudocoelom, a tubular digestive system, and a multilayered cuticle. Arrow worms and polychaetes are both marine animals with segmented bodies and bristles, while flatworms and annelids have true coeloms rather than pseudocoeloms.

An Animal with Bilateral Symmetry, a Pseudocoelom, a Tubular Digestive