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How do adaptations aid in natural selection?

Learn how adaptations aid in natural selection, including structural, physiological, and behavioral adaptations that help organisms thrive and reproduce. Explore examples like camouflage, mimicry, drug resistance, and hibernation. Discover the three types of adaptations and how they influence an organism's survival strategies.

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How do adaptations aid in natural selection?

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  1. ADAPTATION NOTES How do adaptations aid in natural selection? http://www.youtube.com/watch?v=YVvn8dpSAt0 4:20-5:20min

  2. Adaptation • Any trait that aids the chances of survival & reproduction of an organism • An individual can NOT adapt to environment!! • A species can adapt over time • 3 types

  3. 1. Structural Adaptations • Changes in the structure of organism’s body parts • Ex: thorns, spines, disruptive coloration (zebra/killer whale), camouflage, mimicry

  4. Ex. Camouflage • A species blends in with environment (non-living/ abiotic) • Ex. Walking stick, flounder, leaf katydid

  5. Coral king Ex. Mimicry • One species “copies” another species – visual, smell, sound • Ex: King snake, hawk moth caterpillar, owl butterfly, Viceroy butterfly Viceroy monarch

  6. 2.Physiological Adaptations • Changes in organism’s metabolic processes (jobs of body parts) • Ex: drug resistance - bacteria, pesticide resistance - insects, poison glands, blood shunting – marine mammals, “super” kidneys - desert animals

  7. 3. Behavioral Adaptations • Changes in organism’s response to environment • Ex: spinning webs, danger signals, mating rituals, hibernation • Can be learned behaviors (taught) or instinctual (inherited)

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