Ecology

Card Set Information

Author:
ckluckner
ID:
85137
Filename:
Ecology
Updated:
2011-05-10 22:41:08
Tags:
biology
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Description:
Ecology
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  1. What is community?
    individuals of different populations exist
  2. INTERspecific interaction:
    interaction between species
  3. INTRAspecific interaction:
    interaction within species
  4. 4 types of Interspecific Interaction
    • Mutualsim
    • Predator/Prey
    • Parasite/Host
    • Competition
  5. Mutualism:
    both species gain
  6. Predator/Prey
    • predator gains
    • population control
  7. Parasite/Host:
    Ex. HIV-humans, mistletoe-trees, tapeworms-dogs
  8. competition:
    • competing for resources
    • plants
  9. 2 types of plants:
    • Gymnosperms: plants with canes (evergreens-spruce, fir)
    • Angiosperms: produce flowers- fruit
  10. Plant Organs
    • Roots
    • Stem
    • Leaves
    • Flowers
  11. Roots are used for
    • water absorption and nutrients (root hairs increase absorption)
    • support and stability
  12. Stem is used for
    • transports water ans sugars
    • support
  13. Leaves are used for
    photosynthesis, transpiration
  14. Flowers (specialized leaves)
    • attract pollunators:
  15. Modifications (Root):
    Storage (ex. carrot, turnip)
  16. Modifications (Stem):
    • Nodes and internodes
    • GROW HORIZONTALLY:
    • Rhizome-grows undeground (sugarcane)
    • Stolon-grows above ground
    • GROW VERTICALLY:
    • Bulbs- fleshy leaves (onion)
    • Corms- Papery leaves

    • tuber- enlarge portion
    • thorn- modified section of stem
  17. Modifications (Leaves):
    • Succulent- used for water storage
    • Spines- protection
    • Trap- traps insects and digestion
  18. Environment-->Selection:
    • Natural Selection: selection done by nature, selects favorable characteristics
    • Artificial Selection: selection done by humans

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