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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
asymmetry
C
5 point bilateral
D
5 point radial
2) An echinoderm has a(n)
A
gizzard
B
exoskeleton
C
endoskeleton
D
brain
3) The echinoderm skeleton is made of
A
calcium carbonate
B
bone
C
silica
D
chitin
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
sand dollars
B
sea cucumbers
C
sea fans
D
sea stars
6) The spines of a sea star are used for
A
locomotion
B
touch
C
capturing prey
D
protection
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
nerve ring and radial nerves
B
brain and nerve ring
C
brain, nerve ring, and radial nerves
D
brain and radial nerves
9) Water enters the water vascular system through the
A
madreporite
B
radial canals
C
mouth
D
tube feet
10) Water is pushed into the tube feet by contraction of the
A
sieve plate
B
stone canal
C
radial canal
D
ampullae
*select an answer for all questions
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