Chapter 34

Which of the following is NOT a diagnostic feature of the Chordata? a. vertebrae b. a muscular, post-anal tail c. pharyngeal slits or clefts d. notochord e. a hollow dorsal nerve cord

Which of the following chordates is most likely to look least like other chordates? a. adult tunicate b. lancelet c. embryonic human d. larval tunicate e. adult human

The diagnostic feature of Chondrichthyes is _____. a. a swim bladder b. jaws c. a lateral line system d. a streamlined, torpedo-shaped body e. an endoskeleton of calcified cartilage

Most members of which of the following groups are most closely associated with a wet or moist environment? a. pterosaurs b. birds c. mammals d. dinosaurs e. amphibians

There are three major groups of mammals, categorized on the basis of their _____. a. habitat b. method of reproduction c. size d. presence or absence of hair e. method of locomotion

Vertebrates and tunicates share a. an endoskeleton that includes a skull. b. jaws adapted for feeding. c. a notochord and a dorsal, hollow nerve cord. d. a high degree of cephalization.

Unlike eutherians, both monotremes and marsupials a. have some embryonic development outside the uterus. b. lack nipples. c. lay eggs. d. are found in Australia and Africa. e. include only insectivores and herbivores.

Which one of these chordate groups lacks a post-anal tail and a notochord as adults? a. lancelets b. tunicates c. amphibians d. mammals e. reptiles

The common ancestor of all these chordate groups EXCEPT the _____ probably had paired appendages. a. mammals b. amphibians c. lampreys d. ray-finned fishes e. reptiles

Which of these is the only chordate group that has hair? a. tunicates b. ray-finned fishes c. mammals d. amphibians e. sharks, rays, and chimaeras