Question

'Touch me not' shows ..................... movement.

• A. Nastic
• B. Tropic
• C. Both A and B
• D. None of the above

Answer 1

The correct option is A Nastic

• Touch me not shows nastic movement.
• Nastic movements are plant movements that occur in response to environmental stimuli. But unlike tropic movements, the direction of the response is not dependent on the direction of the stimulus. Some of the most spectacular plant movements are nastic movements.
  

These include:

(i) The closing of 'Touch me not' plant in response to touch.

(ii) The closing of the carnivorous 'Venus Flytrap' leaf, when it captures prey or the folding of the Mimosa Pudica leaf, when it is disturbed.
Hence, option A is correct.