Echinoderms: Answer Key
1. In what environment can echinoderms be found?
2. What does the word Echinodermata mean, the name that characterizes the echinoderms?
3. Name four characteristics of the phylum Echinodermata.
4. What kind of symmetry do the echinoderms have? What does this mean?
5. Name the main characteristics and give five examples of the classes of echinoderms:
5a. Asteroidea
5b. Echinoidea
5c. Ophiuroidea
5d. Holothuroidea
5e. Crinoidea
6. What do you do in the event of an accident with sea urchins?
7. In a practical class identify, discover and explain the function of the following structures:
7a. Starfish:
i
Ambulacral grooves or feet
ii
Madreporite plate
iii
Mouth
iv
Anus
7b. Sea urchins:
i
Aristotle’s Lantern
ii
Spines
iii
Mouth
iv
Endoskeleton
8. Make a collection containing 20 pictures or photographs of different species of echinoderms. Include the common name, scientific name, family and order.
9. How do starfish feed?
10. Do some research about sea urchins and some species that have poison.
References
Adapted from AY Honors/Echinoderms/Answer Key on the Pathfinder Wiki, licensed under CC BY-SA 3.0. See the original page's history for its authors.
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