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1. 
What are echinoderms?
A.
Invertebrates
B.
Vertebrates
2. 
Where do echinoderms live?
A.
lake
B.
ocean
C.
pond
3. 
What do echinoderms used to get oxygen?
A.
pores
B.
gills
4. 
Which system does an echinoderm have?
A.
nervous system
B.
muscular system
5. 
Give an example of a Echinoderm?
6. 
The spines do what to echinoderms?
A.
protect them from predators
B.
give them shape
7. 
Echinoderms have an external skeleton.
A.
True
B.
False
8. 
How many arms do most echinoderms have? Write the number in the blank.
9. 
Echinoderms have a brain.
A.
True
B.
False
10. 
Which of the following echinoderms do not have arms?
A.
star fish
B.
brittle star
C.
sea urchin