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bilateral symmetry

A Dictionary of Biology | 2004 | Copyright

bilateral symmetry A type of arrangement of the parts and organs of an animal in which the body can be divided into two halves that are mirror images of each other along one plane only (usually passing through the midline at right angles to the dorsal and ventral surfaces). Bilaterally symmetrical animals are characterized by a type of movement in which one end of the body always leads. In botany this type of symmetry is usually called zygomorphy when applicable to flowers (e.g. foxglove and antirrhinum flowers are zygomorphic). Compare radial symmetry.

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"bilateral symmetry." A Dictionary of Biology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"bilateral symmetry." A Dictionary of Biology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O6-bilateralsymmetry.html

"bilateral symmetry." A Dictionary of Biology. 2004. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-bilateralsymmetry.html

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bilateral symmetry

A Dictionary of Ecology | 2004 | | Copyright

bilateral symmetry The arrangement of the body components of an animal such that one plane divides the animal into two halves which are approximate mirror images of each other. Bilateral symmetry is associated with movement in which one end of the animal constantly leads. Sometimes bilateral symmetry is superimposed on another kind of symmetry (e.g. in some echinoids (Echinoidea) where basic pentameral (five-sided) symmetry has a bilateral symmetry superimposed upon it). Compare radial symmetry.

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MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Ecology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O14-bilateralsymmetry.html

MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Ecology. 2004. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-bilateralsymmetry.html

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bilateral symmetry

A Dictionary of Earth Sciences | 1999 | | Copyright

bilateral symmetry The condition, found in many organisms, where one half of the body or structure is the mirror image of the other. Sometimes bilateral symmetry is superimposed on another kind of symmetry, e.g. in some echinoids (Echinoidea) where basic pentameral (five-sided) symmetry has a bilateral symmetry superimposed upon it.

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AILSA ALLABY and MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-bilateralsymmetry.html

AILSA ALLABY and MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-bilateralsymmetry.html

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bilateral symmetry

A Dictionary of Zoology | 1999 | | Copyright

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MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Zoology. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O8-bilateralsymmetry.html

MICHAEL ALLABY. "bilateral symmetry." A Dictionary of Zoology. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-bilateralsymmetry.html

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Free newspaper and magazine articles

	Bilateral Symmetry in Coincident Timing.(Brief Article) Magazine article from: Research Quarterly for Exercise and Sport; 3/1/2001
	Life & left-handedness.(The New Ambidextrous Universe: Symmetry and Asymmetry... Magazine article from: New Criterion; 12/1/2006
	Symmetry is sexy: reply to Hodgson's 'Symmetry and humans'.(Debate)(Report) Magazine article from: Antiquity; 12/1/2009