Question

Mimosa pudica shows

• A. Chemotropism
• B. Nyctinasty
• C. Seismonasty
• D. All of the above

Answer 1

The correct option is C Seismonasty

Siesmonasty means a response to shaking. The best example is Mimosa pudica (Touch-me-not plant) which is the sensitive plant. Such, plants respond to stimuli such as touch, blow or mechanical shock by folding their leaflets and lowering their leaves. This effect is caused by a change in the turgidity of the leaflets brought about by the movement of water into and out of the parenchymatous cells of the pulvinus or swollen leaf base.

Thus, the correct answer is option C.