Chapter 29:
Echinoderms and Invertebrate Chordates
Practice Test
1.
Brittle stars use their tube feet for __________.
a.
locomotion
b.
reproduction
c.
moving particles of food into the mouth in the central disk
d.
protection from predators
Hint
2.
The tube feet on sand dollars are modified for __________.
a.
digestion
b.
excretion and breathing
c.
sensing the environment
d.
capturing food and breathing
Hint
3.
There is a good fossil record of echinoderms because they have __________ that easily fossilize.
a.
spines
b.
tube feet
c.
exoskeletons
d.
endoskeletons
Hint
4.
A muscular structure that operates tube feet is called the __________.
a.
ray
b.
madreporite
c.
ampulla
d.
pedicellaria
Hint
5.
Sea urchin spines __________.
a.
help capture prey
b.
aid in protection, locomotion and burrowing
c.
are involved in reproduction
d.
sense the amount of light in the water
Hint
6.
An invertebrate chordate that is a sessile filter feeder is a __________.
a.
sea squirt
b.
sea lily
c.
sea cucumber
d.
lancelet
Hint
7.
The ability of brittle stars to regenerate enables them to survive __________.
a.
changes in temperature
b.
low tides
c.
high tides
d.
predators
Hint
8.
In seastars, thin-walled tubes that have a suction cup on one end are called ________.
a.
tube feet
b.
spines
c.
ampullae
d.
pedicellarias
Hint
9.
By comparing the development of echinoderms and chordates, scientists can determine the animals` __________.
a.
methods of defense
b.
feeding methods
c.
phylogeny
d.
response to stimuli
Hint
10.
When moving, a sea star curves up the tips of its rays to detect _______.
a.
light
b.
prey
c.
sound
d.
chemicals in the water
Hint
11.
All adult echinoderms have __________.
a.
bilateral symmetry
b.
notochords
c.
radial symmetry
d.
dorsal nerve cords
Hint
12.
The close relationship between echinoderms and chordates is indicated by their deuterostome development and __________ of their larvae.
a.
notochords
b.
bilateral symmetry
c.
rays
d.
tube feet
Hint
13.
Which of these echinoderms evolved most recently?
a.
sea cucumbers
b.
brittle stars
c.
sea urchins
d.
sea stars
Hint
14.
Humans are more closely related to invertebrate chordates than to echinoderms because they both have __________.
a.
a notochord, gill slits, muscle blocks and a ventral nerve cord
b.
a notochord, gill slits, muscle blocks and a dorsal nerve cord
c.
five senses
d.
gill slits and tails
Hint
15.
The only sessile echinoderm is a __________.
a.
brittle star
b.
sea lily
c.
sea cucumber
d.
sand dollar
Hint
