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5 Written questions

5 Matching questions

  1. photosynthesis
  2. keystone species
  3. ecological succession
  4. realized niche
  5. bioaccumulation
  1. a a species whose presence contributes to ecosystem's diversity and whose extinction would destroy other life forms
  2. b when a species settles for a smaller niche after battling against another species
  3. c transition in species composition of a biological community, usually by a disturbance in community.
  4. d accumulation of a substance in various tissues of a living organism
  5. e carbs are synthesized from CO2 and H2O using light as energy source

5 Multiple choice questions

  1. no 2 species can occupy same niche at same time
  2. pioneer organisms, settle uninhabitable area and decomposes rocks to turn to soil, later lose to immigrants
  3. organisms in first stage of succession
  4. production of ammonia or ammonium compounds in the decomposition of organic matter by bacteria
  5. (nitrogen cycle step 3) plant absorbs ammonium (NH3) and nitrate ions (NO3) through roots

5 True/False questions

  1. heterotrophdependent on other complex organisms for food


  2. ecozoneswhere 2 ecosystems meet


  3. respirationreleasing water vapor through stomata of plants or pores


  4. mutualismrelationship where both species benefit


  5. Net Primary Productivityamount of energy that plants pass on to the community