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5 Written questions

5 Matching questions

  1. disturbance
  2. herbivory
  3. predation
  4. parasitism
  5. pathogens
  1. a a disease causing organism
  2. b 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)
  3. c 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
  4. d An interaction between species in which one species, the predator, eats the other, the prey
  5. e consumption of plants

5 Multiple choice questions

  1. 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
  2. An ecological relationship between organisms of two different species that live together in direct contact
  3. 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
  4. A defense where one species is selected to look like another species which has an effective defense.
  5. The mutual influence on the evolution of two different species interacting with each other and reciprocally influencing each other's adaptations

5 True/False questions

  1. resource partitioningThe 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. evennessThe simple count of number of species in an area.


  3. mutualismA symbiotic relationship in which both participants benefit


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


  5. communitiesA symbiotic relationship in which the symbiont benefits but the host is neither helped nor harmed


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