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A nastic movement in higher plants associated with diurnal light and temperature changes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in higher plants, the movement of leaves, petals, and other organs associated with the alternation of day and night and depending primarily on diurnal changes in temperature (thermonasty) and light intensity (photonasty).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.