biology ch 54

  1. who were the first people to observe cells
    hooke and leewenhook
  2. biomass
    organic material that non photosynthetic organisms can eat
  3. NPP results in
  4. primary consumer
    herbivore - an organism that eats plants
  5. detritus
    dead animals and plant tissue
  6. detritus are consumed by
    primary decomposers
  7. biomass represents
    chemical energy
  8. organisms that obtain their energy from the same type of source are said to occupy the same...
    trophic level
  9. what connects the trophic levels
    a food chain
  10. grazing food chain
    collection of organisms that eat plants, along with the organisms that eat herbivores
  11. secondary consumers
    consumers that eat herbivores
  12. food webs
    are a compact way of summerizing energy flows and documenting the complex trophic interactions that occur in communities
  13. primary producer
    an autotroph - an organism that can synthesize its own food from inorganic sources
  14. NPP
    net primary productivity - energy that is invested in new tissue
  15. understanding this is a primary focus of ecosystem ecology because it dictates the amount of energy available to consumers and ecomposers
  16. production of biomass is highest at which trophic level
    lowest trophic level
  17. what may influence the number of trophic levels that can be supported in a given ecosystem
    inefficiencies of energy transfer, environmental stability, and environmental complexity
  18. gross primary productivity
    total amount of photosynthesis in a given area and time period
  19. gross photosynthetic efficiency
    the efficienfy with which plants use the total amount of energy available to them
  20. secondary production
    the production of new tissue by primary consumers
  21. the path that an element takes as it moves from abiotic systems through organisms and back again is called...
    biogeochemical cycle - life earth chemical
  22. completely decayed organic material is called .... because it is rich in a family of carbon containing molecules called humic acids
  23. what most often limits the overall rate at which nutrients move through an ecosystem
    the decomposition of detritus
  24. decomposition rate is influenced by what 2 factors
    abiotic conditions and the quality of detritus as a nutrient source for things that complete decomposition
  25. groundwater
    water found in soil
  26. global carbon cycle
    documents the movement of carbon among terrestrial ecosystems, the ocean, and the atmosphere
  27. what is responsible for taking carbon out of the atmosphere and turning it into tissue
  28. cellular respiration
    releases carbon that has been incorporated into living organisms to the atmosphere in the form of carbon dioxide
  29. carbon dioxide functions as a
    greenhouse gas
Card Set
biology ch 54
biology ch 54