Micropyle
(redirected from micropylar)

Also found in: Dictionary/thesaurus, Medical

0.01 sec.

micropyle [′mī·krə‚pīl]

(botany)

A minute opening in the integument at the tip of an ovule through which the pollen tube commonly enters; persists in the seed as an opening or a scar between the hilum and point of radicle.

Micropyle

(1) An opening in the membrane of the eggs of insects, arachnids, some mollusks, fishes, and a number of other animals, through which the spermatozoon penetrates. (2) An opening in the apex of the ovule in higher seed plants, through which the pollen tube penetrates during pollination. The micropyle is formed because the integuments surrounding the ovule are unattached.

Micropyle

the canal in the integument or integuments of a plant through which the ovule is penetrated in gymnosperms by pollen grains and in angiosperms by pollen tubes. The external opening of the micropyle may be observed on the surface of a mature seed in the form of a dark dot.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.

?Page tools

Printer friendly
Cite / link

Feedback

Mentioned in	?		Encyclopedia browser	?		Full browser	?
No references found			micropower microprism microprobe microprobe spectrometry microprocesor microprocessing unit microprocessor microprocessor based microprocessor intertie and communication system Microprocessor without Interlocked Pipeline Stages Microprogram Microprogram Control microprogrammable instruction microprogramming Microprojection microprojector micropsia Micropterygidae Micropterygoidea Micropthalma Disjuncta micropublishing micropulsation micropump micropycnometer Micropygidae micropylar Micropyle microquake microquasar microradiogram microradiograph microradiography microradiometer microreactor microrefractometry microReid Microrelief microrepublishing microresistivity survey microrheology microsand microsatellite deoxyribonucleic acid Microsauria microscale motion microsclere Microscope microscope stage microscopic microscopic anisotropy microscopic reversibility microscopic state			Micropsittinae Micropsittini micropterous Micropterus Micropterus Micropterus dolomieu Micropterus nigricans Micropterus nigricans Micropterus pseudoplites Micropterus salmoides Micropterus salmoides Micropterygidae Micropterygoidea Micropteryx crista-galli Micropteryx fasciculata Micropteryx laurifolia Micropthalma Disjuncta Micropthalmia, Colobomatous, 2 micropublisher micropublisher micropublishing micropublishing micropulsation Micropulse Lidar Micropulse Lidar micropump micropuncture Micropurchase Automation micropycnometer Micropygidae micropylar micropyle micropyle micropyle micropyles micropyles micropyles micropyrometer Microquake Microquasar Microquasars Microrad microradian microradian microradian microradiogram microradiograph microradiograph microradiograph microradiography microradiography microradiography microradiometer Microraptoria Microreaction Microreactor Microreactors microreader microreaders microreentry microrefractometer

Encyclopedia

Free Tools:	For surfers: Free toolbar & extensions \| Word of the Day \| Help For webmasters: Free content \| Linking \| Lookup box \| Double-click lookup

Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.

Micropyle (redirected from micropylar)

Micropyle
(redirected from micropylar)