Which one of these features is not a characteristic of the phylum Chordata?

Presence of notochord

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Gill slits in pharynx

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Solid tubular ventral nerve cord

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Deuterostomia

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Solution

The correct option is A Solid tubular ventral nerve cord
Phylum Chordata is characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. They are also deuterostomia as they possess the true coelom. Anus develops first in the embryo and mouth is formed later.
Thus, 'Solid tubular ventral nerve cord' is not a characteristic of phylum Chordata.

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