Biology 211 (5) ~ SI Worksheet #10 ~ www.si.iastate.edu ~ 10/3/07Chapter 34: Vertebrates 1.) Vertebrates are a subphylum of what phylum?2.) What clade do Chordates belong to?3.) What are the 4 characteristics (describe them) of a Chordate and what qualifies and animal as a Chordate?1.)2.)3.)4.) 4.) What subphyla do Tunicates belong to and when do they display the Chordate characteristics during their life?5.) What subphylum do Lancelets belong to and when do they display their Chordate traits?6.) What was the significance of the evolution of the head in Chordate development?7.) What is the unique type of cell seen in craniates and what does it give rise to?8.) When did craniates evolve into vertebrates and what characteristics developed at this time?9.) What are the characteristics of Lamprey that make them vertebrates?10.) What are the Conodonts?11.) What are Ostracoderms?12.) What are Gnathostomes and what are their major distinguishing traits?13.) What class do sharks and rays belong to and why?14.) What is the difference between oviparous, ovoviviparous, and viviparous development as seen in the shark?15.) What new body part developed in Osteicthyes and what is it a derivative of?16.) What is a unique trait of amphibians with regard to gas
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