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