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HomeHomework HelpbiologyEchinodermata Overview

Echinodermata Overview

Echinodermata is a phylum of marine invertebrates characterized by their radial symmetry, a calcareous endoskeleton, and a water vascular system, which facilitates movement and feeding. This group includes organisms such as starfish, sea urchins, and sea cucumbers.

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Biology
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Overview

Echinodermata is a fascinating phylum of marine animals that includes starfish, sea urchins, and sea cucumbers. These creatures are known for their unique body structure, which features radial symmetry and a specialized water vascular system that aids in movement and feeding. Echinoderms play vital ...

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Key Terms

Echinodermata
A phylum of marine animals with radial symmetry.

Example: Starfish and sea urchins are examples of echinoderms.

Radial Symmetry
Symmetry around a central axis.

Example: Starfish exhibit radial symmetry with arms extending from a central disc.

Water Vascular System
A network of water-filled canals used for movement and feeding.

Example: The water vascular system helps starfish move and capture prey.

Regeneration
The ability to regrow lost body parts.

Example: A starfish can regenerate an arm if it is lost.

Habitat
The natural environment where an organism lives.

Example: Echinoderms can be found in rocky shores, coral reefs, and deep-sea environments.

Biodiversity
The variety of life in a particular habitat or ecosystem.

Example: Echinoderms contribute to the biodiversity of marine ecosystems.

Related Topics

Cnidaria
A phylum that includes jellyfish and corals, known for their stinging cells.
intermediate
Mollusca
A diverse phylum including snails and octopuses, characterized by soft bodies and often a shell.
intermediate
Marine Ecology
The study of marine organisms and their interactions with the environment.
advanced

Key Concepts

Radial SymmetryWater Vascular SystemRegenerationHabitat Diversity