1) Aperture
Found on
https://www.crosswordclues.com/clue/micropyle
[zoology] A micropyle is a pore in the membrane covering the ovum, through which a sperm enters. Micropyle is also found in sporozoites of some digenetic microorganism such as plasmodium at their anterior part of the cell that ultimately leads towards apical cap. ...
Found on
http://en.wikipedia.org/wiki/Micropyle_(zoology)
microscopic orifice
Found on
http://phrontistery.info/m.html
In nematodes: A minute opening in the membrane of an egg through which the spermatozoa enter.
Found on
http://ppathw3.cals.cornell.edu/glossary/Defs_M.htm
• (n.) An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted. • (n.) An opening in the outer coat of a seed, through which the fecundating pollen enters the ovule.
Found on
http://thinkexist.com/dictionary/meaning/micropyle/
(from the article `angiosperm`) ...After initiation of the carpel wall, one or two integuments arise near the base of the ovule primordium, grow in a rimlike fashion, and enclose ... ...stigma, and the pollen tube must grow through the tissues of the style (if present) and the ovary to reach the ovule. The pollen grains of ... ...age...
Found on
http://www.britannica.com/eb/a-z/m/86
(from the article `insect`) The eggshell, or chorion, commonly provided with an air-filled meshwork, provides for respiration of the developing embryo. The chorion is also ... The egg is enclosed in a protective layer (the chorion), through which a system of tiny canals (micropyle) permits the entrance of sperm. In some ... [2 relate...
Found on
http://www.britannica.com/eb/a-z/m/86
In the ovules of seed plants (angiosperms and gymnosperms), an opening in the integuments through which the pollen tube ususually enters.
Found on
http://www.daviddarling.info/encyclopedia/M/micropyle.html
A minute opening or group of openings into the insect egg through which the spermatozoa enter in fertilization.
Found on
http://www.earthlife.net/insects/glossary.html
1. Small hole or aperture in the protective tissue surrounding a plant ovule, through which the pollen tube enters at fertilization. Develops into a small hole in the seed coat through which, in many cases water enters at germination. ... 2. Perforation in the shell (chorion) of an insect egg through which the sperm enters at fertilization. ... (18...
Found on
http://www.encyclo.co.uk/local/20973
An opening through which the pollen tube passes, also pore in the oocyst of some coccidia and in the egg of an insect.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
(1) Small hole or aperture in the protective tissue surrounding a plant ovule, through which the pollen tube enters at fertilization. Develops into a small hole in the seed coat through which, in many cases water enters at germination. (2) Perforation in the shell (chorion) of an insect's egg through which the sperm enters at fertilization.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Mi'cro·pyle noun [
Micro- + Greek ... gate, orifice: confer French
micropyle .]
(Biol.) (a) An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.
(b) An opening in the outer coat of a seed, t...
Found on
http://www.encyclo.co.uk/webster/M/62
The opening through which impregnation takes place; the point on the seed marking the orifice of the ovule.
Found on
http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms
Type: Term Pronunciation: mī′krō-pīl Definitions: 1. Minute opening believed to exist in the investing membrane of certain oocytes as a point of entrance for the sperm. 2. Former name for micropore.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=55274
[
n] - minute opening in the wall of an ovule through which the pollen tube enters
Found on
http://www.webdictionary.co.uk/definition.php?query=micropyle
The minute opening in a butterfly egg.
Found on
https://www.encyclo.co.uk/local/20499
noun minute opening in the wall of an ovule through which the pollen tube enters
Found on
https://www.encyclo.co.uk/local/20974
a small opening at the anterior end of an insect egg that allows the entry of sperm for fertilisation.
Found on
https://www.encyclo.co.uk/local/22345
No exact match found.
