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Seventh Grade (Grade 7) Communities, Populations, and Ecosystems Questions

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Grade 7 Communities, Populations, and Ecosystems
If two species occupy the same niche, one of the species might eventually die off because of
  1. mutualism.
  2. environmental loss.
  3. competition.
  4. natural selection.
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
The study of where organisms live is
  1. dispersal.
  2. biogeography.
  3. ecology.
  4. climatology.
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
All the living things in an ecosystem is a(n)
  1. community.
  2. population.
  3. biosphere.
  4. individual.
Grade 7 Communities, Populations, and Ecosystems
What is a community?
  1. all the different populations that live together in an area
  2. all the members of one species
  3. all abiotic and biotic factors interacting together
  4. all of the above
Grade 7 Communities, Populations, and Ecosystems
What is an organism's niche?
  1. food source
  2. population
  3. role
  4. primary succession
Grade 7 Communities, Populations, and Ecosystems
What is the definition of competition?
  1. the number of feathers a bird develops as it grows up
  2. the struggle against other organisms for necessities
  3. the first organisms in a new environment
  4. the population count in an area
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
The number of individuals in a population is the
  1. census.
  2. head count.
  3. estimate.
  4. population size.
Grade 7 Communities, Populations, and Ecosystems
The number of organisms an area can hold without running out of the limited resources is the
  1. carrying capacity.
  2. maximum amount.
  3. primary resources.
  4. filled population.
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
All the populations of organisms that live in one region make up a
  1. community.
  2. consumer.
  3. conservation.
  4. habitat.
Grade 7 Communities, Populations, and Ecosystems
A very small specialized habitat within a larger habitat is a
  1. community.
  2. population.
  3. microhabitat.
  4. climatograph.
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
What kind of limiting factor keeps a population relatively stable?
  1. independent
  2. dependent
  3. competition
  4. none of the above
Grade 7 Communities, Populations, and Ecosystems
Grade 7 Communities, Populations, and Ecosystems
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