photonasty, photonastic, photonastically One-sided growth due to the action of light. The opening and closing of evening primrose flowers upon exposure to dark and light is one example. Found on http://www.wordinfo.info/words/index/info/view_unit/2803/11
photonasty, photonastic, photonastically One-sided growth due to the action of light. The opening and closing of evening primrose flowers upon exposure to dark and light is one example.