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5 Written questions

5 Matching questions

  1. keystone species
  2. predation
  3. resource partitioning
  4. symbiotic relationships
  5. ecological succession
  1. a The division of environmental resources by coexisting species such that the niche of each species differs by one or more significant factors from the niches of all coexisting species
  2. b 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
  3. c Species that are not usually abundant in a community yet exert strong control on community structure by the nature of their ecological roles or niches
  4. d An ecological relationship between organisms of two different species that live together in direct contact
  5. e An interaction between species in which one species, the predator, eats the other, the prey

5 Multiple choice questions

  1. a disease causing organism
  2. The concept that when populations of two similar species compete for the same limited resources, one population will use the resources more efficiently and have a reproductive advantage that will eventually lead to the elimination of the other population
  3. 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)
  4. consumption of plants
  5. A type of succession that occurs where an existing community has been cleared by some disturbance that leaves the soil intact

5 True/False questions

  1. coevolutionThe mutual influence on the evolution of two different species interacting with each other and reciprocally influencing each other's adaptations


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


  4. primary successionA type of succession that occurs where an existing community has been cleared by some disturbance that leaves the soil intact


  5. commensalismA symbiotic relationship in which both participants benefit