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