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5 Written questions

5 Matching questions

  1. nitrification
  2. assimilation
  3. invasive species
  4. edge effect
  5. primary consumers
  1. a organisms that consume producers (plants and algae)
  2. b an introduced, nonnative species
  3. c there is a greater species diversity and biological density than in the center of the ecological community
  4. d (nitrogen cycle step 3) plant absorbs ammonium (NH3) and nitrate ions (NO3) through roots
  5. e (nitrogen cycle step 2) bacteria in soil convert ammonium (NH4+) to nitrate or NO3.

5 Multiple choice questions

  1. organism that nourishes oxidation of inorganic chemical compounds, instead of photosynthesis
  2. where large quantity of resources sits for long time
  3. dependent on other complex organisms for food
  4. size of an organism's natural habitat is reduced or human civilization occurs
  5. organisms that consume secondary consumers or other tertiary consumers

5 True/False questions

  1. denitrificationnitrogen cycle step 4) specialized bacteria convert ammonia to NO3, NO2, AND N2 and releases back to atmosphere


  2. energy pyramid10% of energy is transferred from 1 level to the next, 90% given off as heat, respiration, digestion, etc.


  3. biodiversityorganism that can convert radiant energy or chemical energy to carbs


  4. ecotonessmaller regions in ecosystems that share similar physical features


  5. realized nichewhen a species settles for a smaller niche after battling against another species