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Question

Dorsal tubular nerve cord is found in:

A
All invertebrates
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B
Some invertebrates
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C
All chordates
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D
Some chordates
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Solution

The correct option is C All chordates
Phylum Cordata is characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. Hence, dorsal tubular nerve cord is found in all cordates.

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