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oosphere
oosphere (ovum; egg cell) The nonmotile female gamete in plants and some algae. In angiosperms (flowering plants) it is a cell in the embryo sac of the ovule. In other plants it is situated in an archegonium. In algae, such as Fucus, the oosphere is protected by an oogonium until it is shed into the water prior to fertilization. Many oospheres store food in the form of starch or oil droplets.
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"oosphere." A Dictionary of Biology. 2004. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "oosphere." A Dictionary of Biology. 2004. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O6-oosphere.html "oosphere." A Dictionary of Biology. 2004. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-oosphere.html |
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oosphere
oosphere The female gamete contained within an oogonium. Fertilization of an oosphere is followed by the development of an oospore.
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Cite this article
MICHAEL ALLABY. "oosphere." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "oosphere." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O7-oosphere.html MICHAEL ALLABY. "oosphere." A Dictionary of Plant Sciences. 1998. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-oosphere.html |
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