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Ninth Grade (Grade 9) Communities, Populations, and Ecosystems Questions

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Grade 9 Communities, Populations, and Ecosystems
The study of organisms' interactions with their surroundings is
  1. abiotic.
  2. ecology.
  3. sociology.
  4. microbiology.
  5. geology.
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Which is NOT considered to be a density-dependent factor?
  1. competition
  2. predation
  3. commensalism
  4. parasitism and disease
Grade 9 Communities, Populations, and Ecosystems
Which of these factors increases the size of a population?
  1. birthrate
  2. emigration
  3. death rate
  4. carrying capacity
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Every member of the same species that inhabits a region makes up a
  1. community.
  2. habitat.
  3. ecosystem.
  4. population.
Grade 9 Communities, Populations, and Ecosystems
Which situation is a good example of a limiting factor in an ecosystem?
  1. an ecosystem with little to no rain
  2. an organism with no natural predators
  3. an ecosystem with an abundance of nutrients
  4. an ecosystem with plenty of space for population growth
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Which of these statements describes a niche?
  1. an environmental factor that tends to limit population size
  2. an increase in the Earth's average atmospheric temperature that causes corresponding changes in climate, which may result from the greenhouse effect
  3. the unique living arrangement of an organism defined by its habitat, food sources, time of day it is most active, and other factors
  4. none of the above
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
All the members of a species that live in an area make up a(n)
  1. community.
  2. habitat.
  3. ecosystem.
  4. population.
Grade 9 Communities, Populations, and Ecosystems
What is ecology?
  1. the study of life
  2. the study of habitats
  3. the study of the environment
  4. the study of interactions between organisms and their environment
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
The maximum amount of individuals an environment can support is the
  1. population size.
  2. carrying capacity.
  3. population model.
  4. population density.
Grade 9 Communities, Populations, and Ecosystems
What is the separation of an ecosystem into smaller pieces of land?
  1. overexploitation
  2. habitat fragmentation
  3. pollution
  4. speciation
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Which is the correct order of the levels of organization from smallest to largest?
  1. species, community, population, biome, ecosystem, biosphere
  2. species, population, community, ecosystem, biome, biosphere
  3. population, species, community, ecosystem, biosphere, biome
  4. community, population, community, ecosystem, biome, biosphere
Grade 9 Communities, Populations, and Ecosystems
A limiting factor that depends on population size is a
  1. size limiting factor.
  2. prediction limiting factor.
  3. completion limiting factor.
  4. density-dependent limiting factor.
Grade 9 Communities, Populations, and Ecosystems
Which is an application of population ecology?
  1. conservation of endangered species
  2. control of invasive species
  3. sustainable resource management
  4. all of the above
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