thigmo is the ability of a plant to coil around the objects they touch.
Thigmo means touch.
The four tropisms are: "Hydo-tropism" "Photo-tropism" "Geo-tropism" "Thigmo-tropism" MerchantMooMoo summons his milk!
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.