CBSE Class 10 Answered
what are nastic and curvature movements?
Asked by | 05 Sep, 2012, 07:53: PM
Expert Answer
The movements which allow organs of plants to move in or the other direction is called movements of curvature. These movements are of two types i.e. mechanical (found in non living organs of plant) and another is vital movements (found in living organs of plants).
Nastic movement is a type of vital movement. Nastic responses are rapid, reversible responses to non-directional stimuli (such as temperature, humidity, light intensity). The rate or frequency of these responses increases as intensity of the stimuli increases. Example - The opening and closing of flowers.
Answered by | 06 Sep, 2012, 08:54: AM
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