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