You do not, at present, have either pharyngeal gill slits or a notochord and yet they are essential features of the Chordata. Explain.
You do not, at present, have either pharyngeal gill slits or a notochord and yet they are essential features of the Chordata. Explain.
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4.
The chordates share several features which have played asignificant role in the evolution of the phylum. Check all of thefeatures that one would use to exclusively classify members ofChordata and not members of Echinodermata.
| a postanal tail during embryonicdevelopment | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| pharyngeal pouches during embryonicdevelopment | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| an endoskeleton | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| a notochord on the dorsal side ofthe gut in the early embryo | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| deuterostomic development of theembryo | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| a hollow nerve cord 5. A number of major evolutionary innovations arose in the fishlineage. Check all of the evolutionary innovations associated withthe fishes.
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