Chapter_34b - Biology 7e(Campbell Chapter 34b Vertebrates 1 Which of these is not considered an amniote A amphibians B non-avian reptiles C avian

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Biology, 7e (Campbell) Chapter 34b: Vertebrates 1) Which of these is not considered an amniote? A) amphibians B) non-avian reptiles C) avian reptiles D) egg-laying mammals E) placental mammals 2) Why is the amniotic egg considered an important evolutionary breakthrough? It A) has a shell that increases gas exchange. B) allows incubation of eggs in a terrestrial environment. C) prolongs embryonic development. D) provides insulation to conserve heat. E) permits internal fertilization to be replaced by external fertilization. 3) Which era is known as the "age of reptiles"? A) Cenozoic B) Mesozoic C) Paleozoic D) Precambrian E) Cambrian 4) Which of these characteristics added most to vertebrate success in relatively dry environments? A) the amniotic egg B) the ability to maintain a constant body temperature C) two pairs of appendages D) claws E) a four-chambered heart 5) From which of the following groups are snakes most likely descended? A) dinosaurs B) plesiosaurs C) lizards D) crocodiles E) synapsids 6) All of the following are characteristics of most extant non-avian reptiles,
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This note was uploaded on 02/27/2009 for the course SC 424111 taught by Professor Various during the Winter '08 term at Kasetsart University.

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Chapter_34b - Biology 7e(Campbell Chapter 34b Vertebrates 1 Which of these is not considered an amniote A amphibians B non-avian reptiles C avian

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