Control and Coordination in Plants

Last updated at August 14, 2026 by

Control and Coordination in plants

Have you seen the Touch-Me-Not plant ( Mimosa pudica ) ?

How does it behave when touched ?

Th e leaves curl away and droop.

This is how the Touch-Me-Not plant responds to touch .

TOUCH-ME-NOT RESPONSE TO STIMULI - Teachoo.jpg

Think about a seed germinating , 

  • Roots grow in the downward direction  
  • Shoot containing stem, leaves, flowers etc. grow in the upward direction .

This is another kind of response displayed by plants.

RESPONSE TO STIMULI RELATED TO GROWTH - Teachoo.jpg

Observe the two kinds of responses;

RESPONSE IN PLANTS - Teachoo.jpg

We know plants do not have nervous systems or muscles for movement. So what causes these responses to stimuli in plants? 

 

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Transcript

TOUCH-ME-NOT RESPONSE TO STIMULI Normal Light Touch Hard Touch RESPONSE TO STIMULI RELATED TO GROWTH Shoot Root RESPONSE IN PLANTS Leaves of Touch - Me – Not Plant drooping on touching Root and shoot growing downward and upward respectively Not related to growth Related to growth

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