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micropyle
[ mahy-kruh-pahyl ]
noun
- Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.
- Botany. the minute orifice or opening in the integuments of an ovule.
micropyle
/ ˈɪəʊˌ貹ɪ /
noun
- a small opening in the integuments of a plant ovule through which the male gametes pass
- a small pore in the shell of an insect's eggs through which the sperm passes
micropyle
/ ī′ə-ī′ /
- A minute opening in the ovule of a seed plant through which the pollen tube usually enters.
- A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter.
Derived Forms
- ˌˈ, adjective
Other yvlog Forms
- c·l adjective
yvlog History and Origins
Origin of micropyle1
yvlog History and Origins
Origin of micropyle1
Example Sentences
Inverted and straight, with the micropyle next the hilum and the radicle consequently inferior.
At one end a cap-like portion of this forms a detachable operculum, in the middle of which is a minute opening, the micropyle.
The female flower is enveloped in a closely fitting sac-like investment, which must be regarded as a perianth; within this is an orthotropous ovule surrounded by a single integument prolonged upwards as a beak-like micropyle.
This is seen in the passion-flower, where the covering arises from the placenta or extremity of the funicle at the base of the ovule and passes upwards towards the apex, leaving the micropyle uncovered.
The micropyle indicates the organic apex of the ovule.
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