Chapter_34 - Biology, 7e (Campbell) Chapter 34: Vertebrates...

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(Campbell) Chapter 34: Vertebrates 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 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 3) 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. 4) 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 5) 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. 6) What do hagfishes and lampreys have in common with the extinct conodonts? A) lungs B) the jawless condition C) bony vertebrae D) their mode of feeding E) swim bladders 7) The exoskeletons of marine arthropods are made of calcified ________, and the endoskeletons of vertebrates are mostly composed of calcified ________. A) cartilage; cartilage
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Chapter_34 - Biology, 7e (Campbell) Chapter 34: Vertebrates...

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