Question
15. Match the echinoderm to the proper description. 1. Sea Lilly 2. Sea Star 3. Sea Cucumber 4. Brittle Star 5. Sea Daisy 6. Sand Dollar A. Member of class Ophiuroidea having a clearly defined central disk, separate from the arms that can break away easily. B. Member of class Echinoidea having no arms, but five rows of tube feet used for locomotion. C. Member of the oldest class of echinoderms, Crinoidea, having long flexible arms radiating from the top of a long, thin stalk. D. Member of class Asteroidea having arms equipped with tube feet radiating out from a central disk that can be regenerated if lost or removed. E. Member of class Holothuroidea having no protective spines or outer covering, primarily filter feed organic matter from the substrate. F. A member of the recently discovered class Concentricycloidea, having tube feet set in a ring around its outer edge.
Ask by Fleming Hammond. in the United States
Mar 10,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
1. Sea Lilly - C
2. Sea Star - D
3. Sea Cucumber - E
4. Brittle Star - A
5. Sea Daisy - F
6. Sand Dollar - B
Solution
1. Sea Lilly
\( \textbf{C.} \) Member of the oldest class of echinoderms, Crinoidea, having long flexible arms radiating from the top of a long, thin stalk.
2. Sea Star
\( \textbf{D.} \) Member of class Asteroidea having arms equipped with tube feet radiating out from a central disk that can be regenerated if lost or removed.
3. Sea Cucumber
\( \textbf{E.} \) Member of class Holothuroidea having no protective spines or outer covering, primarily filter feed organic matter from the substrate.
4. Brittle Star
\( \textbf{A.} \) Member of class Ophiuroidea having a clearly defined central disk, separate from the arms that can break away easily.
5. Sea Daisy
\( \textbf{F.} \) A member of the recently discovered class Concentricycloidea, having tube feet set in a ring around its outer edge.
6. Sand Dollar
\( \textbf{B.} \) Member of class Echinoidea having no arms, but five rows of tube feet used for locomotion.
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Did you know that echinoderms, like sea lilies and sea cucumbers, are known for their remarkable abilities to regenerate lost limbs? This captivating feature not only aids in their survival but adds a hint of magic to their underwater world, showcasing nature's incredible adaptability. Furthermore, when it comes to ecosystems, these fascinating creatures play vital roles. For instance, sea cucumbers are nature's clean-up crew, sifting through sediment and helping recycle nutrients back into the ocean. So next time you see one, remember you're looking at a mini-environmental hero!
