A distinguishing feature of the Squamata is their
a. hard shell
b. kinetic skull
c. external fertilization
d. shell-less eggs Correct Answers b. kinetic skull
air sacs
a. birds
b. bony fish
c. salamander
d. sharks Correct Answers a. birds
An animal within which phylum was just discovered to have a
transient anus?
a. ctenophora
b. platyhelminthes
c. cnidaria
d. rotifera Correct Answers a. ctenophora
As a new curator for a large public aquarium in your city, you
are in charge of correctly identifying some of the animals
presently in your care. You have two adult animals in tanks in
front of you, and you know that one is a lamprey, and the other
is a hagfish. Which feature would allow you to correctly identify
each animal?
, a. lampreys lack jaws, but hagfish are jawed fish
b. lampreys are parasitic, while hagfish are not parasitic
c. hagfish must live in fresh water, while lampreys are
entirely marine
d. hagfish are noted for their extensive fins, while
lampreys lack fins Correct Answers b. lampreys are parasitic,
while hagfish are not
parasitic
chordates with a backbone
a. tetrapod
b. vertebrate
c. gnathostome
d. amniotes Correct Answers b. vertebrate
cutaneous respiration
a. birds
b. bony fish
c. salamander
d. sharks Correct Answers c. salamander
Describe the route of water through a sponge
a. enters through pores into the spongocoel and exits
via the osculum
b. enters through the osculum into the spongocoel and
exits via pores
c. enters through the spongocoel into the osculum and
exits via pores