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Echinoderms
Test Description: BIO 2
Instructions: Answer all questions to get your test result.
1) What type of symmetry do echinoderms have?
A
asymmetry
B
5 point bilateral
C
bilateral
D
5 point radial
2) An echinoderm has a(n)
A
exoskeleton
B
endoskeleton
C
brain
D
gizzard
3) The echinoderm skeleton is made of
A
calcium carbonate
B
bone
C
chitin
D
silica
4) All are functions of the water vascular system EXCEPT
A
reproduction
B
locomotion
C
gas exchange
D
feeding
5) All are echinoderms EXCEPT
A
sea cucumbers
B
sea stars
C
sea fans
D
sand dollars
6) The spines of a sea star are used for
A
locomotion
B
protection
C
touch
D
capturing prey
7) When feeding the star everts its _____________ onto the soft parts of its prey.
A
gastric glands
B
stomach
C
intestine
D
mouth
8) The sea star nervous system consists of a
A
brain and nerve ring
B
nerve ring and radial nerves
C
brain and radial nerves
D
brain, nerve ring, and radial nerves
9) Water enters the water vascular system through the
A
tube feet
B
mouth
C
radial canals
D
madreporite
10) Water is pushed into the tube feet by contraction of the
A
stone canal
B
ampullae
C
radial canal
D
sieve plate
*select an answer for all questions
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