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5 Written questions

5 Matching questions

  1. ecological succession
  2. evenness
  3. primary succession
  4. richness
  5. parasitism
  1. a Transition in the species composition of a biological community, often following ecological disturbance of the community; the establishment of a biological community in an area virtually barren of life
  2. b A mathematical measure of how the total number of individuals in an area are divided among the number of species in an area. In even communities, most species have about the same number of individuals present, where in uneven communities almost all individuals present belong to one species.
  3. c A type of ecological succession that occurs in a virtually lifeless area, where there were originally no organisms and where soil has not yet formed
  4. d A symbiotic relationship in which the symbiont (parasite) benefits at the expense of the host by living either within the host (as an endoparasite) or outside the host (as an ectoparasite)
  5. e The simple count of number of species in an area.

5 Multiple choice questions

  1. A force that changes a biological community and usually removes organisms from it. Disturbances, such as fire and storms, play pivotal roles in structuring many biological communities
  2. a disease causing organism
  3. All of the variety of life; usually refers to the variety of species that make up a community; concerns both species richness (the total number of different species) and the relative abundance of the different species
  4. The "job" a species plays in a community, e.g. small seed consumer, top predator.
  5. A defense where one species is selected to look like another species which has an effective defense.

5 True/False questions

  1. herbivoryA defense where one species is selected to look like another species which has an effective defense.

          

  2. commensalismA symbiotic relationship in which the symbiont benefits but the host is neither helped nor harmed

          

  3. communitiesAll the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction

          

  4. symbiotic relationshipsAn ecological relationship between organisms of two different species that live together in direct contact

          

  5. resource partitioningAn interaction between species in which one species, the predator, eats the other, the prey

          

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