Ch 34: Vertebrate Objective Questions & Diagrams
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1 Ch 34: Vertebrate Objective Questions & Diagrams Invertebrate Chordates and the Origin of Vertebrates 1. Distinguish between the two subgroups of deuterostomes. 2. Describe the four unique characteristics of chordates. 3. Distinguish between the three subphyla of the phylum Chordata and give examples of each. 4. Describe the two-stage hypothesis for the evolution of vertebrates from invertebrates. Introduction to the Vertebrates 5. Describe the specialized characteristics found in the subphylum Vertebrata and explain how each is beneficial to survival. 6. Define and distinguish between gnathostomes, tetrapods, and amniotes. Jawless Vertebrates 7. Define and compare the groups Myxini, Cephalaspidomorphi, ostracoderms, conodonts, and placoderms Distinguish between agnathans and fishes. Fishes and Amphibians Amniotes 9. Describe the function and evolution of jaws. 10. Describe and distinguish between the classes Chondrichthyes and Osteichthyes, noting the main traits of each group. 11. Identify and describe the main subgroups of the class Osteichthyes. 12. Describe the early evolution of amphibians. 13. Describe the common traits of amphibians and distinguish among the three orders of living amphibians. 14. Describe an amniotic egg and explain its significance in the evolution of reptiles, birds, and mammals. 15. Distinguish between the two systems of classifying amniotes (synapsids, anapsids, and diapsids versus reptiles, birds, and mammals). 16. List the distinguishing characteristics of members of the class Reptilia and explain any special adaptations to the terrestrial environment. 17. Compare the interpretations of dinosaurs as ectotherms or endotherms. 18. Characterize and compare the first and second major reptilian radiations. 19. List and compare the traits of the major groups of modern reptiles. 20. List the distinguishing characteristics of members of the class Aves and explain any special adaptations for flight. 21. Summarize the evidence supporting the fact that birds evolved from reptilian ancestors. 22. List and compare the major groups of modern birds. 23. Describe the main features of mammals. 24. Describe the evolution of mammals.
2 25. Distinguish among monotreme, marsupial, and placental mammals. 26. Describe the adaptive radiation of mammals during the Cretaceous and early Tertiary periods. 27. Compare and contrast the four main evolutionary clades of eutherian mammals. Primates and the Evolution of Homo sapiens 28. Describe the general characteristics of primates. Note the particular features associated with an arboreal existence. 29. Distinguish between the two suborders of primates and describe their early evolutionary relationship. 30. Distinguish between hominoid and hominid. 31. Name three of the most prominent misconceptions about human evolution. 32. Describe the evolutionary changes that occurred in the course of human evolution from about 35 million to 5 million years ago. 33. Describe the evolution of the major features of humans. 34. Describe the global dispersion patterns during the evolution of humans. Chapter Summary & Diagrams TYPICAL VERTEBRATE FEATURES Four anatomical features characterize the phylum Chordata (pp , FIGURE 34.2) These chordate characteristics are a notochord; a dorsal, hollow nerve cord; pharyngeal slits; and a postanal tail. Neural crest, pronounced cephalization, a vertebral column, and a closed circulatory system characterize the subphylum Vertebrata (p. 683, FIGURE 34.6) A mass of embryonic cells called the neural crest gives rise to many of the uniquely vertebrate characteristics. Vertebrates have a well-developed head with a brain and braincase (skull). Their segmentally arranged vertebrae enclose the dorsal hollow nerve cord (spinal cord). Vertebrate organ systems, such as their closed circulatory system, support an active metabolism.
3 JAWLESS VERTEBRATES FISHES AND AMPHIBIANS AMNIOTES THE NOURISHED EGG
4 MAMMALS PRIMATES AND THE EVOLUTION OF Homo sapiens
5 MAMMAL DIVERSITY
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