Answer :


1. Moon flower closes at day time but opens during night time. This non-directional movement in response to stimulus light is called photonasty.


2. Mimosa pudica closes its leaves when slightly touched and this non-directional movement in response to stimulus touch is called thigmonasty.


3. Tulipa sp. responds to temperature and this movement is called thermonasty.


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Tamilnadu Board Science