BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Generally, roots have a negative touch response, meaning when they feel an object, they would grow away from the object. This allows the roots to go through the soil with minimum resistance. Because of this behavior, roots are said to be negatively thigmotropic.

Detailed explanation-2: -Thigmotropism is an example of tropism and it may be positive or negative. A positive thigmotropism is a response towards the touch stimulus whereas a negative thigmotropism is a response away from the touch stimulus.

Detailed explanation-3: -Complete Answer:-Stems of the plant show negative geotropism while the roots show positive geotropism.

Detailed explanation-4: -Thigmotropism is similar to touch in humans. Thigmotropism is when a plant responds to a movement or touch from another stimulus. This stimulus is known as a contact stimulus.

Detailed explanation-5: -Thigmotropism : The touch-me-not (Mimosa pudica) plants exhibit the phenomenon of thigmotropism where the leaves droop on being touched by a finger or an object. The phenomenon of directional movement of the plant parts in response to the stimulus of contact or touch with a solid surface is known as thigmotropism.