Which of the following is not a character of the phylum Chordata?

Dorsal tubular nerve cord

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Pharyngeal gill slits

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Presence of notochord

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Presence of spinal cord

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Solution

The correct option is D Presence of spinal cord
Animal belongs to phylum Chordata are characterized by the presence of a notochord, a dorsal hollow nerve cord, and paired pharyngeal gill slits. These characters are known as three fundamental chordate characters.
In some chordates notochord is replaced by the vertebral column in the adult stage.
Protochordates i.e., Urochordata and Cephalochordata don't have a well-developed spinal cord.

Thus, the correct answer is option D

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