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5 Written questions

5 Matching questions

  1. nitrification
  2. gause's principle
  3. climax community
  4. assimilation
  5. biomagnification
  1. a (nitrogen cycle step 2) bacteria in soil convert ammonium (NH4+) to nitrate or NO3.
  2. b process where concentration of toxic substances increase in each successive length in food chain.
  3. c (nitrogen cycle step 3) plant absorbs ammonium (NH3) and nitrate ions (NO3) through roots
  4. d no 2 species can occupy same niche at same time
  5. e stable, mature community that reaches equilibrium after having evolved through stages and adapted to its environment

5 Multiple choice questions

  1. where large quantity of resources sits for long time
  2. feeding levels on food chain
  3. ecological succession begins in a near lifeless area
  4. smaller regions in ecosystems that share similar physical features
  5. complex interrelated food chains

5 True/False questions

  1. secondary consumersorganisms that consume secondary consumers or other tertiary consumers


  2. speciespioneer organisms, settle uninhabitable area and decomposes rocks to turn to soil, later lose to immigrants


  3. communityburning


  4. bioaccumulationaccumulation of a substance in various tissues of a living organism


  5. residency timethe amount of time a resource spends in a reservoir or an exchange pool