(Answered) 1 list the characteristics of the phylum chordata compare

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1. List the characteristics of the phylum chordata. Compare and contrast the three subphyla of the chordates.

2. Explain why the evolution of jaws around the mouth was a critical innovation in vertebrate evolution.

3. Although amphibians were the first animals to move onto dry land, they were still dependent on water for reproduction and lor respiration. What evolutionary adaptations allowed reptiles to become the first "true" land vertebrates?

4. What structural and physiological specializations have occured in birds that allow them to fly?

5. Distinguish between the three types of mammals on the basis of their modes of reproduction. Give examples of each.

6. Compare and contrast the movement of gases in the avian and mammalian lung.

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