noun
- A growth movement in plants in which the lower surface grows more rapidly than the upper surface, causing the organ to curve upward.
Usage: botany; technical term
Examples
- Hyponasty in plant leaves causes them to curl upward when exposed to certain environmental stresses.
- The phenomenon of hyponasty is the opposite of epinasty, where the upper surface grows faster.
- Scientists study hyponasty to understand how plants respond to light and temperature changes.
- Hyponasty can be observed in the petioles of some plants during drought conditions.