The word thigmotropism refers to the turning or bending of a plant in response to a touch stimulus.
The 5 types of tropism are geotropism, phototropsim, hydrotropism, chemotropsim, and thingmotropism.
Tropism is a biological phenomenon where an organism responds to the stimulus brought by the environmental factors. Some examples include: chemotropism, heliotropism, phototropism, thermotropism and electrotropism.