The way by which the organism responds to the stimuli is called as behavior. Behavior can be defined as the range of actions and mannerism made by the individualism, organisms, in conjugation with the environment.
The behavior varies with individual as it is specific to the organism. An organism might respond to the stimuli say in a negative way.
Another organism might respond to the stimuli in a positive way. This depends on the type of stimuli and organism.
Specific to plants: phototropism (leaves growing towards the sun), hydrotropism (roots growing to or away from moisture), geotropism (plants growing towards the center of the earth)
