Entity: ECHINODERM
Echinoderms are marine animals belonging to the phylum Echinodermata, characterized by a radiating arrangement of body parts and a calcareous body wall with protruding spines.
ECHINODERM
Etymology
The term 'echinoderm' is derived from the Greek words 'echinos' meaning 'hedgehog' and 'derma' meaning 'skin', referring to the spiny appearance of these marine animals.
Definition
Echinoderms are marine invertebrates belonging to the phylum Echinodermata, characterized by a radiating arrangement of body parts and a calcareous body wall with protruding spines. They typically have tube feet and exhibit five-part radially symmetrical bodies.
Historical Context
Echinoderms have a long evolutionary history, with fossil records dating back to the Cambrian period. They have adapted to various marine environments and play crucial roles in marine ecosystems.
Cultural Significance
Echinoderms have cultural significance in various societies, often symbolizing regeneration, resilience, and diversity in nature. They have been featured in art, mythology, and folklore across different cultures.
Related Concepts
Echinoderms are related to other marine invertebrates such as mollusks, arthropods, and cnidarians. They share common evolutionary origins and ecological interactions within marine ecosystems.
See Also
- Starfish
- Sea Urchins
- Marine Biology
A diverse group of marine invertebrates with tube feet and five-part radially symmetrical bodies, including starfishes, sea urchins, and related forms.