Question

Leaves of the sensitive plant move very quickly in response to ‘touch’. How is this stimulus of touch communicated and explain how the movement takes place? 

Hint:

Thigmotropism helps plants respond to physical stimuli, and this unique movement is powered by changes in water pressure inside plant cells.

Answer 1

The F₂sensitive plant (Mimosa pudica)F₂ displays F₂thigmotropismF₂, meaning it moves when touched.
- Touching the sensitive plant's leaves quickly alters cell turgor pressure.
- Mechanoreceptors in plant cells initially detect the signal, prompting an electrical impulse throughout the plant.
- This alters water flow in plant cells, causing leaves to fold and droop, a defense against herbivores.