Radial Symmetry
방사대칭
Embed This Widget
Add the script tag and a data attribute to embed this widget.
<script src="https://cdn.jsdelivr.net/npm/speciesfyi-embed@1/dist/embed.min.js" defer></script>
<div data-speciesfyi="glossary" data-slug="radial-symmetry"></div>Embed via iframe for maximum compatibility.
<iframe src="https://speciesfyi.com/iframe/glossary/radial-symmetry/" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://speciesfyi.com/glossary/radial-symmetry/Add a dynamic SVG badge to your README or docs.
[](https://speciesfyi.com/glossary/radial-symmetry/)Use the native HTML custom element.
<script src="https://cdn.jsdelivr.net/npm/speciesfyi-embed@1/dist/embed.min.js" defer></script>
<speciesfyi-glossary slug="radial-symmetry"></speciesfyi-glossary>Definition
A body plan in which body parts are arranged symmetrically around a central axis, as seen in jellyfish and starfish.
Detailed Explanation
Radial symmetry is well suited to sessile or slow-moving organisms that encounter their environment equally from all directions. Starfish can reach food from any angle; jellyfish can detect threats or prey approaching from 360 degrees. Echinoderms are secondarily radially symmetric — their larvae are bilateral, indicating descent from a bilateral ancestor that re-evolved radial symmetry.