noun
- Plural of exogen; plants that grow by adding layers of wood on the outside of the stem, including most trees and shrubs (dicotyledons and gymnosperms).
Usage: botanical; technical; less common in modern usage; 'dicots' and 'gymnosperms' are preferred in contemporary botany
Examples
- Most trees in temperate forests are exogens that develop annual growth rings.
- Exogens differ from endogens in their pattern of stem growth and vascular arrangement.
- The botanist classified the specimens as exogens based on their secondary growth.
- Oak and pine are common examples of exogens found in North America.