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Fixed action pattern

AP Bio Chapter 51 Outline

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Chapter 51 Animal Behavior Lecture Outline Overview: Shall We Dance? ? Red-crowned cranes (Grus japonensis) gather in groups to dance, prance, stretch, bow, and leap. They grab bits of plants, sticks, and feathers with their bills and toss them into the air. ? How does a crane decide that it is time to dance? In fact, why does it dance at all? ? Animal behavior is based on physiological systems and processes. ? An individual behavior is an action carried out by the muscular or hormonal system under the control of the nervous system in response to a stimulus. ? Behavior contributes to homeostasis; an animal must acquire nutrients for digestion and find a partner for sexual reproduction.

AP Biology Notes on Animal Behavior

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Unit 16 - Animal Behavior List of Terms Fixed Action Pattern (FAP): innate, highly stereotypic behavior, that must be finished even if it is utterly useless. Initiated by external stimuli called sign stimuli e.g. stickleback fish attack other males (which have a red belly) who enter their territory if the stimuli are exchanged between the same species, it?s called a releaser Migration Animals migrate in response to external stimuli e.g. changes in day length, precipitation, temperature environment also gives cues for navigation Some animals track their position relative to sun Animals monitor changes in position of sun against internal circadian clock to tell where they are Nocturnal animals use the North star, which has a fixed position Pigeons use the magnetic field of the earth
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