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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 radial
C
asymmetry
D
5 point bilateral
2) An echinoderm has a(n)
A
exoskeleton
B
gizzard
C
endoskeleton
D
brain
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
feeding
B
locomotion
C
gas exchange
D
reproduction
5) All are echinoderms EXCEPT
A
sand dollars
B
sea stars
C
sea fans
D
sea cucumbers
6) The spines of a sea star are used for
A
capturing prey
B
protection
C
locomotion
D
touch
7) When feeding the star everts its _____________ onto the soft parts of its prey.
A
gastric glands
B
stomach
C
mouth
D
intestine
8) The sea star nervous system consists of a
A
brain and nerve ring
B
brain and radial nerves
C
nerve ring and radial nerves
D
brain, nerve ring, and radial nerves
9) Water enters the water vascular system through the
A
madreporite
B
mouth
C
radial canals
D
tube feet
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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