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Animals belonging to phylum Chordata are fundamentally characterised by the presence of

( a ) a notochord alone
( b ) a notochord and a dorsal hollow nerve cord
( c ) a notochord and paired pharyngeal gill slits
( d ) a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits

1 Answer

(D) is the right answer.

Phylum – Chordata : Animals belonging to phylum Chordata are fundamentally characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits
answered Jan 3, 2014 by pady_1
 

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