The employment of the term 'nastic' is, however, convenient when used in a well-defined and restricted sense. FromProject Gutenberg No sharp distinction can therefore be made between the movements of growth and of variation, between tropic and nastic curvatures. ...
These observations demonstrate that developmental programming of the thermonastic leaf movement through polar auxin distribution enables plants to bend their leaves upward in response to non-directional thermal stimuli, contributing to cooling plant body temperatures under warm temperature conditions. We ...
Movements may also be in response to a directional stimulus (i.e., a tropic movement) or a stimulus that is diffuse (nastic movement). Common examples of growth movements resulting from a directional stimulus are phototropism and gravitropism. Other growth movements may occur in response to ...
Define nyctinastic. nyctinastic synonyms, nyctinastic pronunciation, nyctinastic translation, English dictionary definition of nyctinastic. n. A diurnal movement of plant parts, such as the opening during the day and closing during the night of certain f