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Questions and Answers
What is the primary material of the endoskeleton in echinoderms?
What is the primary material of the endoskeleton in echinoderms?
- Fibrous cartilage
- Calcium-rich ossicles (correct)
- Chitin exoskeleton
- Silica-based plates
What do the plates of the endoskeleton in echinoderms bear?
What do the plates of the endoskeleton in echinoderms bear?
- Tentacles
- Spines (correct)
- Suckers
- Eyes
What do the ossicles provide for echinoderms?
What do the ossicles provide for echinoderms?
- Sites for muscle attachment and shell-like protection (correct)
- Sites for sensory perception
- Protection against predators
- Energy for locomotion
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Study Notes
Echinoderm Endoskeleton
- The primary material of the endoskeleton in echinoderms is calcium carbonate.
- The plates of the endoskeleton in echinoderms bear movable, calcium carbonate ossicles.
- The ossicles provide a flexible, yet protective, support structure for echinoderms.
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