The Rapid Leaf Movements Resulting from a Response to Touch

Question

The rapid leaf movements resulting from a response to touch (thigmotropism)primarily involve
A)rapid growth response.
B)potassium channels.
C)nervous tissue.
D)aquaporins.
E)stress proteins.

Accepted Answer

Rapid leaf movements resulting from thigmotropism primarily involve potassium channels. When a plant is touched, there is a rapid influx of calcium ions which triggers the activation of potassium channels, leading to depolarization of the plasma membrane and ultimately the rapid leaf movement.