34_TestBank_TB - Biology, 7e (Campbell) Chapter 34:...

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Biology, 7e (Campbell) Chapter 34: Vertebrates Chapter Questions 1) Which of the following is not a shared characteristic of all chordates? A) pharyngeal clefts B) post-anal tail C) notochord D) dorsal, hollow nerve cord E) four-chambered heart Answer: E Topic: Concept 34.1 Skill: Knowledge 2) What is one characteristic that separates chordates from all other animals? A) true coelom B) dorsal, hollow nerve cord C) blastopore, which becomes the anus D) bilateral symmetry E) segmentation Answer: B Topic: Concept 34.1 Skill: Knowledge 3) Which of these are characteristics of all chordates during at least a portion of their development? A) a dorsal, hollow nerve cord B) pharyngeal clefts C) post-anal tail D) A and B only E) A, B, and C Answer: E Topic: Concept 34.1 Skill: Knowledge 4) Pharyngeal slits appear to have functioned first as A) the digestive system's opening. B) suspension-feeding devices. C) components of the jaw. D) gill slits for respiration. E) portions of the inner ear. Answer: B Topic: Concept 34.1 Skill: Knowledge 1
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Which of the following statements would be least acceptable to most zoologists? A) The extant cephalochordates are contemporaries, not ancestors, of vertebrates. B) The first fossils resembling cephalochordates appeared in the fossil record around 550 million years ago. C) Recent work in molecular systematics supports the hypothesis that cephalochordates are the most recent common ancestor of all vertebrates. D) The extant cephalochordates are the immediate ancestors of the fishes. E) Cephalochordates display the same method of swimming as do fishes. Answer: D Topic: Concept 34.1 Skill: Comprehension 6) Which extant chordate group is postulated to be most like the earliest chordates in appearance? A) Cephalochordata B) adult Urochordata C) Amphibia D) Reptilia E) Chondrichthyes Answer: A Topic: Concept 34.1 Skill: Knowledge 7) Which are extinct organisms that may represent a transition between cephalochordates and vertebrates? A) Haikouella and Haikouichthys B) Archaeopteryx C) Acanthostega D) conodonts E) acanthodians Answer: A Topic: Concept 34.2 Skill: Knowledge 8) A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics? A) legs B) no jaws C) an amniotic egg D) metamorphosis E) endothermy Answer: B Topic: Concept 34.2 Skill: Application 9) Lampreys differ from hagfishes in A) lacking jaws. B) having a cranium. C) having pharyngeal clefts that develop into pharyngeal slits. D) having a notochord throughout life. E) having a notochord that is surrounded by a tube of cartilage.
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34_TestBank_TB - Biology, 7e (Campbell) Chapter 34:...

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