Chapter Questions
Which of the following is not a defining characteristic of vertebrates?a. craniumb. hinged jawc. vertebral columnd. endoskeleton
Which of the following organisms are considered cyclostomes?a. tunicatesb. hagfishc. lampreysd. both a and be. both b and c
The presence of a bony skeleton, an operculum, and a swim bladder are all defining characteristics ofa. Myxini.b. lampreys.c. Chondrichthyes.d. bony fishes.e. amphibians.
Which type of fish is a lobe-fin?a. moray eelb. sea dragonc. lampreyd. stingraye. lungfish
Organisms that lay eggs are said to be a. oviparous.b. ovoviparous.c. viviparous.d. placental.e. none of the above.
Which clade does not include frogs?a. vertebratesb. gnathostomesc. tetrapodsd. amniotese. lobe fins
In some amphibians, the adult retains certain larval characteristics, a phenomenon known asa. metamorphosis.b. parthenogenesis.c. cephalization.d. paedomorphosis.e. hermaphrodism.
The membrane of the amniotic egg that serves as a site for waste storage is thea. amnion.b. yolk sac.c. allantois.d. chorion.e. albumin.
Which characteristic qualifies lizards as gnathostomes?a. a craniumb. a skeleton of bone or cartilagec. a hinged jawd. the possession of limbse. amniotic eggs
Which of the following is not a distinguishing characteristic of birds?a. amniotic eggb. feathersc. air sacsd. lack of certain organse. lightweight skeletons