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Echinoderm Review
Test Description: This reviews the basic characteristics shared by all echinoderms.
Instructions: Answer all questions to get your test result.
1) Which of the following is an echinoderm?
A
Coral
B
Sea anemone
C
Sea star (starfish)
D
Worm
2) Which of the following describes the body structure of an echinoderm?
A
Body has many pores
B
Spiny skinned with radial symetry
C
Central cavity with one opening
D
Body with bilateral symetry
3) Which of the following is NOT an echinoderm?
A
Jellyfish
B
Brittle Star
C
Sand dollar
D
Sea Urchin
4) How does a starfish eat?
A
Uses its arms
B
Uses teeth
C
Turns stomach inside out to digest meal
D
Uses tentacles
5) What body structure do sea urchins and sand dollars have in common?
A
Both have many arms
B
Both have calcium carbonate plates and are covered with spines
C
Both have polyp body forms
D
Both have bilateral symetry
6) What do sea cucumbers do when threatened by a predator?
A
They expel their organs
B
They swim away
C
They burrow in the sand
D
They shoot spikes
7) Sea stars can repair themselves by regrowing body parts. What is this called?
A
regurgitation
B
respiration
C
regeneration
D
reproduction
8) Describe an echinoderm's water vascular system.
A
Water sacs
B
Network of tentacles
C
Many vacuoles in a row
D
Network of water-filled canals
9) Which of the following is an echinoderm?
A
Clam
B
Hydra
C
Sea Urchin
D
Octopus
10) Which of the following is an echinoderm?
A
Mite
B
Spider
C
Tick
D
Sand dollar
*select an answer for all questions
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