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- 1. Multiple Choice
Where do Echinoderms live?
in salt water
in fresh water
in salt water nd fresh water
on land
- 2. Multiple Choice
What is the circulatory system in Echinoderms called?
A complex system
a water based vascular system
a saline based system
a blood based system
- 3. Multiple Choice
How many legs does a Sea star have?
2
5
7
8
- 4. Multiple Choice
What is the symmetry in modern echinoderms called?
bilateral symmetry
lateral symmetry
5 part symmetry
10 part symmetry
- 5. Multiple Choice
What do all arthropods have?
6 legs
8 legs
stiff legs
jointed legs
- 6. Multiple Choice
True or false. Every arthropod has an exoskeleton.
true
false
- 7. Multiple Choice
For every human on earth there are about ____________ arthropods.
20
200
300 million
1 billion
- 8. Multiple Choice
What is the exoskeleton composed of?
Calcium
Chitin
Lead
Magnesium
- 9. Multiple Choice
True or false. All mollusks are cemented permanently to the ground
true
false
- 10. Multiple Choice
What are the three body parts of a mollusk?
the foot, mantle and toe
the foot, mantle and radula
the mantle, sleeve and toe
the mantle, sleeve and toe
- 11. Multiple Choice
What two systems do mollusks have?
Digestive and respiratory systems
respiratory and endocrine systems
endocrine and circulatory systems
digestive and circulatory systems
- 12. Multiple Choice
What type of worm has a circulatory system?
Flatworms
Roundworms
Nematodes
Segmented worms
- 13. Multiple Choice
What type of worm is a tapeworm?
Flatworm
Roundworm
Segmented worm
Annelid
- 14. Multiple Choice
What type of worm is considered the simplest organism to have an entire digestive system
Flatworms
Roundworms
Segmented Worms
Annelids
- 15. Multiple Choice
What is an example of a worm that would belong to the Phylum Annelida?
Earthworms
Roundworms
Flatworms
Silkworms
- 16. Multiple Choice
What is the hard skeleton of coral composed of?
calcium
iron
cartilage
bones
- 17. Multiple Choice
What makes cnidarians different from sponges?
Cnidarians are multicellular
Sponges are multicellular
Sponges are not mobile
Cnidarians have cells that are organized into tissues
- 18. Multiple Choice
Describe the body form of a sponge.
A sponge is open at the bottom and closed at the top.
A sponge is closed at the bottom and open at the top.
- 19. Multiple Choice
How much water can a sponge filter in one minute?
1 quart
2 quarts
3 quarts
4 quarts
- 20. Multiple Choice
What does porifera mean?
sponge
having holes
water flows through
dead animal
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