Chordates are distinguished from the non-chordates by the presence of:

Solid ventral nerve cord

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Dorsal tubular hollow nerve cord

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Ganglionated nerve cord

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Both A and C

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Solution

The correct option is B Dorsal tubular hollow nerve cord
Animals belonging to the phylum Chordata are characterized by the presence of a notochord, a dorsal tubular hollow nerve cord, paired pharyngeal gill slits, and a post-anal tail. The central nervous system of chordates is present dorsally in the body. It is in the form of a longitudinal, hollow, or tubular nerve cord lying just above the notochord and extending lengthwise in the body.

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