noun
- Plural of hyponasty; the growth response of a plant organ in which the lower surface grows more rapidly than the upper surface, causing the organ to curve upward.
Usage: botanical term; technical
Examples
- The hyponasties of the leaf margins caused them to curl upward in response to the environmental stimulus.
- Botanists study hyponasties to understand how plants adjust their growth patterns.
- The flower petals exhibited hyponasties, bending upward as the lower cells expanded more rapidly.