Encyclopedia > Bilateral symmetry

  Article Content

Bilateral symmetry

In biology, bilateral symmetry is a characteristic of multicellular organisms, particularly animals. A bilaterally symmetric organism is one that is symmetric about a plane running from its frontal end to its caudal end (head to tail), and has nearly identical right and left halves. Most animals are bilaterally symmetric, including humans. The exceptions are sponges (no symmetry), jellyfish and ctenophores (radial symmetry), and echinoderms (partial radial symmetry).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Thomas a Kempis

... himself is more than all the wisdom of the schools and lifts the mind to perceive more of eternal truth in a moment of time than a student might learn in the ...

 
 
 
This page was created in 22 ms