campylotropous ovule
Học thuậtThân thiện
Definition
Noun: A type of ovule (the structure in seed plants that develops into a seed after fertilization) that is curved or bent so that the micropyle (the opening through which the pollen tube enters) is positioned near the funiculus (the stalk that attaches the ovule to the ovary wall).
Usage
This is a specialized botanical term used to describe the specific orientation and shape of an ovule within a plant's ovary. It is used in scientific contexts such as plant morphology, taxonomy, and botany textbooks.
Examples
- The botanist identified the species by examining the campylotropous ovule under the microscope.
- In some plant families, a campylotropous ovule is a key diagnostic characteristic.
- The development of a campylotropous ovule involves asymmetric growth, causing it to curve.
Advanced Usage
- Comparative Anatomy: The term is used in contrast to other ovule types like (straight) or (completely inverted) ovules. For example: "Unlike the anatropous ovule common in many flowering plants, the campylotropous ovule exhibits only a partial inversion."
Variants and Related Words
- Campylotropous (adjective): Describing the condition of having such ovules. Example: "The genus is characterized by its ovules."
- Ovule (noun): The general structure.
- Micropyle (noun): The opening in the ovule.
- Funiculus (noun): The ovule's stalk.
Synonyms
- Curved ovule: A descriptive, non-technical synonym.
- There are no direct one-word synonyms for this precise botanical term.
Related Phrases
- Ovule orientation: A general phrase under which campylotropous is a specific category.
- Campylotropous development: Refers to the process by which this ovule type forms.
Noun
- a curved ovule with the micropyle almost touching the funiculus