zygomorphic
/,zaigə'mɔ:fik/ Cách viết khác : (zygomorphous) /,zaigə'mɔ:fəs/
Definition
- Adjective:
- Capable of division into symmetrical halves by only one longitudinal plane passing through the axis: In botany, this term describes a flower or other structure that is bilaterally symmetrical, meaning it can be divided into two mirror-image halves along only one specific vertical plane.
Usage Examples
- Adjective:
- Snapdragon and orchid flowers are classic examples of zygomorphic flowers.
- The zygomorphic corolla is a key characteristic for identifying many plant families.
- Unlike radially symmetrical blooms, a zygomorphic flower often has a distinct upper and lower lip.
Advanced Usage
- In Botanical Classification: The term is used to categorize floral symmetry, which is an important taxonomic trait. A flower described as zygomorphic is contrasted with one that is actinomorphic (radially symmetrical).
- The evolution of zygomorphic flowers is often associated with specialized pollination by insects.
Variants and Related Words
- Zygomorphous (adj): An alternative, less common form with the same meaning.
- The zygomorphous nature of the pea flower is evident.
- Zygomorphy (n): The state or condition of being zygomorphic.
- Zygomorphy is a common trait in the Lamiaceae family.
Synonyms
- Bilaterally symmetrical: Having symmetry such that the two halves are mirror images of each other.
- Irregular (in a specific botanical context): Sometimes used to describe zygomorphic flowers, as they are not symmetrical in all planes like "regular" (actinomorphic) flowers.
Antonyms
- Actinomorphic: (adj) Capable of being divided into symmetrical halves by multiple longitudinal planes passing through the axis; radially symmetrical.
- Radially symmetrical: Symmetrical about a central axis, like a starfish or a daisy.
Adjective
-
capable of division into symmetrical halves by only one longitudinal plane passing through the axis
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