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germ layers
germ layers (primary germ layers) The layers of cells in an animal embryo at the gastrula stage, from which are derived the various organs of the animal's body. There are two or three germ layers: an outer layer (see ectoderm), an inner layer (see endoderm), and in most animal groups a middle layer (see mesoderm). See also development.
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"germ layers." A Dictionary of Biology. 2004. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "germ layers." A Dictionary of Biology. 2004. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O6-germlayers.html "germ layers." A Dictionary of Biology. 2004. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-germlayers.html |
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germ layers
germ layers In an embryo at the gastrula stage, the layers of cells that will develop to form the organs of the body. See GASTRULATION.
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Cite this article
MICHAEL ALLABY. "germ layers." A Dictionary of Zoology. 1999. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "germ layers." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O8-germlayers.html MICHAEL ALLABY. "germ layers." A Dictionary of Zoology. 1999. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-germlayers.html |
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