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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
Sea star (starfish)
B
Sea anemone
C
Coral
D
Worm
2) Which of the following describes the body structure of an echinoderm?
A
Central cavity with one opening
B
Body has many pores
C
Spiny skinned with radial symetry
D
Body with bilateral symetry
3) Which of the following is NOT an echinoderm?
A
Sand dollar
B
Sea Urchin
C
Brittle Star
D
Jellyfish
4) How does a starfish eat?
A
Uses teeth
B
Uses its arms
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 bilateral symetry
B
Both have many arms
C
Both have polyp body forms
D
Both have calcium carbonate plates and are covered with spines
6) What do sea cucumbers do when threatened by a predator?
A
They swim away
B
They expel their organs
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
reproduction
C
respiration
D
regeneration
8) Describe an echinoderm's water vascular system.
A
Many vacuoles in a row
B
Network of tentacles
C
Network of water-filled canals
D
Water sacs
9) Which of the following is an echinoderm?
A
Hydra
B
Clam
C
Octopus
D
Sea Urchin
10) Which of the following is an echinoderm?
A
Mite
B
Sand dollar
C
Tick
D
Spider
*select an answer for all questions
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