AP BIOLOGY

Detailed explanation-1: -Any change in the environment to which an organism responds is called stimulus. The stimuli initiates an appropriate electrical impulse in the sensory neurons which transmits it to the brain or spinal cord. Q.

Detailed explanation-2: -The ability of an organism to respond to external stimuli is called sensitivity. For example, Plants grow towards light(external stimuli) sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.

Detailed explanation-3: -Response : Response are any type of behavior of a living organism that results from a stimulus. Hence, the change in an organism resulting due to a stimulus is called response or reaction.

Detailed explanation-4: -Response: how the organism reacts to a stimulus and results in a change in behavior. (It is a fancy way of saying “effect”.) Example: Getting a drink when you are thirsty.