WordGarden.iomicropylar
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Meanings
Adjective
at or near the micropyle of an ovule or seed
relating to the micropyle of an egg or egg membrane
Beyond the definition
Imagine a tiny doorway in a plant ovule or in the egg of some animals. That doorway is called a micropyle. The word "micropylar" means relating to that small opening. In plants, it is the spot where the pollen tube enters the ovule so fertilization can happen. In animals such as some insects, it can mean the part of the egg where sperm enters.
You will usually see this word in science, especially in botany and zoology. For example, someone might write about the "micropylar region" when describing where entry happens during reproduction. It is a technical word, but the basic idea is simple: it points to the area around a very small opening that lets reproduction begin.
The word "micropylar" is an adjective that means "of, relating to, or near a micropyle." A micropyle is a very small opening that plays a role in reproduction. In botany, it is the tiny opening in the outer covering of an ovule, the part of a plant that later becomes a seed. In zoology, it can also refer to the small pore in the egg of some animals, especially insects, through which sperm enters.
In plants, this opening matters because the pollen tube must enter the ovule through it for fertilization to take place. That is why scientists may talk about the "micropylar end" or the "micropylar region" of an ovule. In animals, the same adjective can describe the area of the egg connected with the sperm-entry pore. So the word is not limited to plants, even though that is where many learners are most likely to meet it.
"Micropylar" is a technical word and rarely appears in everyday speech. It is mostly used in botany, zoology, developmental biology, and other scientific writing. If you see it in a text, the safest interpretation is usually "related to the tiny reproductive opening called the micropyle." That simple idea will cover most examples, whether the subject is a seed plant, an insect egg, or a close scientific description of reproductive structure.
Examples
- 1
Embryo sac
The egg cell is located at the micropylar end of the embryo sac.
- Domainmicropylar end
the end nearest the small opening of the ovule
- 2
Pollen tube
In many flowering plants, the pollen tube enters the ovule from the micropylar side.
- 3
Ovule regions
The study compared the micropylar region with the chalazal region of the ovule.
See also
Forms and spellings
1 form open this card.
Main spelling
- micropylaradjective