photo-epinasty definition

  • noun:
    • A disproportionately fast development of the upper surface of dorsiventral organs, such as for example leaves, through stimulation of exposure to light.
    • In botany, an epinastic action, or state of curvature observed in specific organs whenever confronted with intense light, because of an even more energetic development of the dorsal area. Compare epinasty.
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