AP BIOLOGY

Detailed explanation-1: -Behavior is anything an animal does involving action and/or a response to a stimulus. Blinking, eating, walking, flying, vocalizing and huddling are all examples of behaviors. Behavior is broadly defined as the way an animal acts.

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: -An example of stimulus in animals is the sight of another animal (especially predators) where they respond by fleeing away or fighting. In animals, most of the responses as a result of stimulus are of instinctual nature.

Detailed explanation-4: -Animals respond to a stimulus in order to keep themselves in favorable conditions.