Ecology: Chapter 1, Section 3 Interactions Among Living Things

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lcayward
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230456
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Ecology: Chapter 1, Section 3 Interactions Among Living Things
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2013-08-19 13:55:03
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Ecology Chapter Section Interactions Among Living Things
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  1. NATURAL SELECTION
    A characteristic that makes an individual better suited to its environment may eventually become common in that species
  2. ADAPTATIONS
    The behaviors and physical characteristics that allow organisms to live successfully in their environments
  3. NICHE
    • The role of an organism in its habitat, or how it makes its living
    • The niche includes the type of food the organism eats, how it obtains its food, & which other organisms use the organism as food
  4. WHAT ARE 3 TYPES OF INTERACTIONS AMONG ORGANISMS?
    • 1. Competition
    • 2. Predation
    • 3. Symbiosis
  5. COMPETITION
    Struggle between organisms to survive as they attempt to use the same limited resources
  6. PREDATION
    An interaction in which one organism kills another for food
  7. PREDATOR
    An organism that does the killing
  8. PREY
    The organism that is killed
  9. WHAT IS THE EFFECT OF PREDATION ON POPULAR SIZE?
    Populations of predators and their prey rise and fall in related cycles
  10. WHAT ARE SOME EXAMPLES OF ANIMAL ADAPTATIONS?

    PLANT ADAPTATIONS?
    Running fast, tentacles of poison, stingers, big eyes, mimicry, protective covering, camouflage, and false coloring
  11. SYMBIOSIS
    A close relationship between two species that benefits at least one of the species
  12. WHAT ARE 3 TYPES OF SYMBIOSIS?
    • 1. Mutualism
    • 2. Commensalism
    • 3. Parasitism
  13. MUTUALISM
    A relationship in which both species benefit
  14. COMMENSILISM
    A relationship in which one specie benefits and the other is neither helped nor harmed
  15. PARASITISM
    Involves one organism living on or inside another organism and harming but not killing it
  16. PARASITE
    • The organism that benefits in a parasitic relationship (usually smaller than the host)
    • Example: Fleas, ticks, leeches, and tapeworms
  17. HOST
    The organism that a parasite lives on or in. The host is harmed by the parasite.

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