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Biology 2 Quiz 28-4
Test Description: Echinoderms
Instructions: Answer all questions to get your test result.
1) An echinoderms water vascular system opens to the outside though the ring canal.
A
False
B
true
2) When an echinoderm exerts a pulling force on an object, muscles pull the centers of the tube feet upward.
A
False
B
true
3) An adult starfish has radial symmetry.
A
True
B
False
4) Some sea urchins defend themselves using long sharp arms.
A
True
B
False
5) If a sea star is pulled into pieces, each new piece will produce a new sea star.
A
True
B
False
6) A starfish can turn its stomach inside out and digest food outside of its body.
A
True
B
False
7) If an echinoderm has slender, flexible arms, can move rapidly, and feeds on detritus, it is a sea urchin.
A
True
B
False
8) In echinoderms oxygen is carried throughout the body in a closed circulatory system.
A
False
B
True
9) In the water vascular system of a sea star, the madreporite connects the ring canal to the tube feet
A
False
B
True
10) A starfish has two stomachs.
A
True
B
False
11) The skeleton of an echinoderm is an
A
exoskeleton made of calcium carbonate
B
exoskeleton made of chitin
C
endoskeleton made of chitin
D
endoskeleton made of calcium carbonate
12) Echinoderms are like vertebrates in that they
A
are bilaterally symmetrical as larvae and adults
B
have an anterior and posterior end
C
are deuterostomes
D
have cephalization
13) Sea lilies and feather stars
A
feed by scraping algae from rocks
B
make up the oldest class of echinoderms
C
are disk shaped echinoderms that often burrow into the sand
D
are the only echinoderms that live in fresh water
14) The echinoderms that look like warty, moving pickles are
A
sea stars
B
feather stars
C
sea cucumbers
D
sea urchins
15) In most species of echinoderms, respiration occurs mainly in the
A
tube feet
B
radial canals
C
ring canal
D
madreporite
16) Which structure is part of an echinoderms water vascular system?
A
skin gill
B
anus
C
stomach
D
madreporite
17) Two echinoderms that are in the same class are
A
sea urchins and sand dollars
B
sea cucumbers and seas urchins
C
brittle stars and sea stars
D
sea stars and sea cucumbers
18) The plates of the endoskeleton are reduced and combined inside a soft , muscular body wall in
A
brittle stars
B
sand dollars
C
sea urchins
D
sea cucumbers
19) Which of the following statements about the water vascular system of echinoderms is correct?
A
The madreporite forms a circle around the animals mouth
B
he ring canal connects to the madreporite
C
each radial canal opens to the outside
D
the tube feet are attached to the ring canal
20) The water vascular system of echinoderms is involved with each of the following functions EXCEPT
A
respiration
B
circulation
C
reproduction
D
movement
*select an answer for all questions
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