Chapter 34: Vertebrates and Other Chordates


1 .       Which of the following is not a diagnostic feature of the phylum Chordata? (Concept 34.1E-Book) [Hint]

 pharyngeal slits
 a muscular, post-anal tail
 a hollow dorsal nerve cord

2 .       Which of the following chordates is most likely to look least like other chordates? (Concept 34.1E-Book) [Hint]

 embryonic human
 adult tunicate
 adult human
 larval tunicate

3 .       A unique feature of craniates is _____. (Concept 34.2E-Book) [Hint]

 a four-chambered heart
 a vertebral column composed of bone
 the neural crest
 a closed circulatory system

4 .       Jaws developed _____. (Concept 34.4E-Book) [Hint]

 from the bony armor of ostracoderms
 from arthropod jaws
 by modification of middle ear bones
 from the rasping tongue
 by modification of the skeletal rods that previously supported the anterior pharyngeal gill slits

5 .       The diagnostic feature of class Chondrichthyes is _____. (Concept 34.4E-Book) [Hint]

 a swim bladder
 an endoskeleton of calcified cartilage
 a streamlined, torpedo-shaped body
 a lateral line system

6 .       Imagine that you are a paleontologist (a scientist who studies fossils of ancient life forms). In a recent dig, you unearthed bones of all of the following. Which could you have found in the oldest sediments? (Concept 34.5E-Book) [Hint]


7 .       Listed below are four adaptations of terrestrial vertebrates. Which one is a characteristic only of truly terrestrial animals that have no need to return to bodies of water at any stage of the life cycle? (Concept 34.6E-Book) [Hint]

 tetrapod locomotion
 nephron tube systems for osmoregulation
 amniotic eggs
 All of these are essential for a completely terrestrial existence.

8 .       Which of the following is not thought to be in the lineage that led to human beings? (Concept 34.6E-Book) [Hint]

 jawless vertebrate
 colonial protist

9 .       There are three major groups of mammals, categorized on the basis of their _____. (Concept 34.7E-Book) [Hint]

 method of locomotion
 presence or absence of hair
 method of reproduction

10 .       Which hominid branch marks an important shift in the relative size of the sexes? (Concept 34.8E-Book) [Hint]

 Homo sapiens
 Homo ergaster
 Homo habilis
 Paranthropus bosei

©2005 Pearson Education, Inc., publishing as Benjamin Cummings