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Question

A primary character of chordates is

A
Paired nerve cord
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B
Ganglionated nerve cord
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C
Dorsal tubular nerve cord
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D
Solid ventral nerve cord
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Solution

The correct option is C Dorsal tubular nerve cord
Chordata contains dorsal tubular nerve cord. It is present only in embryonic stage of chordates. It is primitive character.
So, the correct answer is C.

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