Phylum Chordata is characterised by the presence of
A. notochord
B. dorsal hollow nerve cord
C. paired pharyngeal gill slits

A and B only

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A and C only

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B and C only

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A, B and C

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Solution

The correct option is D A, B and C
Phylum Chordata is characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. These are bilaterally symmetrical, triploblastic, coelomate with organ-system level of organisation. They possess a post anal tail and a closed circulatory system.

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Phylum Chordata is characterised by the presence of A. notochord B. dorsal hollow nerve cord C. paired pharyngeal gill slits

Phylum Chordata is characterised by the presence of
A. notochord
B. dorsal hollow nerve cord
C. paired pharyngeal gill slits