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Published byJulian Hunter Modified over 8 years ago
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2.E.3 Behavior Timing and coordination of behavior are regulated by various mechanisms and are important in natural selection.
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Individuals can act on information and communicate it to others.
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Innate behaviors are behaviors that are inherited.
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Learning occurs through interactions with the environment and other organisms.
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Responses to information and communication of information are vital to natural selection.
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In phototropism in plants, changes in the light source lead to differential growth, resulting in maximum exposure of leaves to light for photosynthesis.
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In photoperiodism in plants, changes in the length of night regulate flowering and preparation for winter.
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Behaviors in animals are triggered by environmental cues and are vital to reproduction, natural selection and survival.
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Example: Hibernation
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Example: Estivation
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Example: Migration
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Example: Courtship
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Cooperative behavior within or between populations contributes to the survival of the populations.
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Example: Fruiting body formation in fungi and certain types of bacteria when resources are in short supply requires a sophisticated system of intercellular communication.
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Example: Niche and resource partitioning
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Example: Mutualistic relationships: Lichen is a mutualistic relationship between a fungus and a photosynthetic partner, usually green algae or cyanobacteria.
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Example: Mutualistic relationships: Bacteria in the digestive tracts of some animals help herbivores break down cellulose.
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Example: Mutualistic relationships: Mycorrhizae are a symbiotic association between a fungus and the roots of a plant. The fungus gains carbohydrates, while the plant has access to more water and nutrients.
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Example: In pollination, flowers produce nectar or other substances to attract insects or other animals to disperse the pollen.
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Learning Objectives: LO 2.38 The student is able to analyze data to support the claim that responses to information and communication of information affect natural selection. [See SP 5.1] LO 2.39 The student is able to justify scientific claims, using evidence, to describe how timing and coordination of behavioral events in organisms are regulated by several mechanisms. [See SP 6.1] LO 2.40 The student is able to connect concepts in and across domain(s) to predict how environmental factors affect responses to information and change behavior. [See SP 7.2]
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