Assertion: chordate's nerve cord | /r/CapableOf | form central nervous system
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Source sentences:
text: The 1,300 species of urochordates, like all members of the phylum Chordata, possess four characteristic anatomical structures as embryos: a flexible body-length rod (the notochord ) that provides resistance against muscular contractions and allows for more efficient movement; a dorsal , hollow, nerve cord that forms the central nervous system; slits in the beginning of the digestive tract (the pharynx) that allow filter feeding and gas exchange; and a postanal tail.