Zoology: General

A Dictionary of Biology A Dictionary of Plant Sciences A Dictionary of Zoology Further reading

micropyle

A Dictionary of Biology | 2004 | Copyright

micropyle
1. A small opening in the surface of a plant ovule through which the pollen tube passes prior to fertilization. It results from the incomplete covering of the nucellus by the integuments. It remains as an opening in the testa of most seeds through which water is absorbed.

2. A small pore in some animal cells or tissues; for example, in insect eggs (see chorion).

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"micropyle." A Dictionary of Biology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"micropyle." A Dictionary of Biology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O6-micropyle.html

"micropyle." A Dictionary of Biology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-micropyle.html

Learn more about citation styles

micropyle

A Dictionary of Plant Sciences | 1998 | | Copyright

micropyle (adj. micropylar) A canal in the coverings of the nucellus through which the pollen tube usually passes during fertilization. Later, when the seed matures and starts to germinate, the micropyle serves as a minute pore through which water enters.

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

MICHAEL ALLABY. "micropyle." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "micropyle." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O7-micropyle.html

MICHAEL ALLABY. "micropyle." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-micropyle.html

Learn more about citation styles

micropyle

A Dictionary of Zoology | 1999 | | Copyright

micropyle (adj. micropylar) A pore in the egg membrane of an insect oocyte, which allows sperm to enter and fertilize the egg.

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

MICHAEL ALLABY. "micropyle." A Dictionary of Zoology. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "micropyle." A Dictionary of Zoology. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O8-micropyle.html

MICHAEL ALLABY. "micropyle." A Dictionary of Zoology. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-micropyle.html

Learn more about citation styles

Free newspaper and magazine articles

	Ultrastructure of the chorion of Echthistus cognatus (Loew, 1849) (Diptera,... Magazine article from: The Ohio Journal of Science; 9/1/2004
	Seed coat anatomy of Ceratozamia mexicana (Cycadales). Magazine article from: The Botanical Review; 1/1/2004
	Flower power. Magazine article from: The Evening Standard (London, England); 3/1/2003