AP BIOLOGY

Detailed explanation-1: -Behavior can also be defined more narrowly as a change in the activity of an organism in response to a stimulus, an external or internal cue or combination of cues. For example, your dog might start drooling-a change in activity-in response to the sight of food-a stimulus.

Detailed explanation-2: -A stimulus is a signal from the animal’s body or its environment. It is a form of energy-light waves or sound vibrations, for example. All but the simplest animals receive a stimulus-light, sound, taste, touch, or smell-through special cells called receptors, located in many places on or in the body.

Detailed explanation-3: -You are hungry so you eat some food. A rabbit gets scared so it runs away. You are cold so you put on a jacket. A dog is hot so lies in the shade.

Detailed explanation-4: -In perceptual psychology, a stimulus is an energy change (e.g., light or sound) which is registered by the senses (e.g., vision, hearing, taste, etc.) and constitutes the basis for perception. In behavioral psychology (i.e., classical and operant conditioning), a stimulus constitutes the basis for behavior.

Detailed explanation-5: -A change in the environment is the stimulus; the reaction of the organism to it is the response.