Q. 14.5( 2 Votes )
There are 3 plant
a. The flowers show nastic movements i.e. photonasty. These are non-directional movement caused by stimulus light.
b. Dandelion flower [ Taraxacum officinale ] opens up in the morning in bright light while closes its petal in dark or night time. Moon flower [ Ipomoea alba ] opens its petals at night and closes during day time.
c. The leaves of plant C exhibit seismonasty or thigmonasty. These are non-directional movements which occur in response to touch and these are very quick.
d. Mimosa pudica [touch-me-not] plant, leaves droop down immediately when slightly touched due to change in turgor pressure.
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i) What happens tTamilnadu Board Science
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