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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 of the following 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
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
A limiting factor that depends on population size is called a(n)
  1. limiting factor
  2. density-dependent limiting factor
  3. completion limiting factor
  4. prediction limiting factor
Grade 9 Communities, Populations, and Ecosystems
Which process results in the development of a new ecosystem, where there was not one before?
  1. primary succession
  2. secondary succession
  3. first succession
  4. tertiary succession
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Which of these 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
Grade 9 Communities, Populations, and Ecosystems
Which of the following best defines an organism's niche?
  1. How it moves
  2. Its breeding behaviors
  3. Its habitat
  4. Its role in its habitat
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Between which pair would competition exist?
  1. Bear and Fish
  2. Human and Cow
  3. Rabbit and Grass
  4. Lion and Tiger
Grade 9 Communities, Populations, and Ecosystems
Grade 9 Communities, Populations, and Ecosystems
Which of these refers to 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 that it is most active, and other factors
  4. None of the above
Grade 9 Communities, Populations, and Ecosystems
Emigration is known for changes in population that result in
  1. no change
  2. population increase
  3. no change, but a decrease in population when organisms disappear
  4. population decrease
Grade 9 Communities, Populations, and Ecosystems
Which is an abiotic pathway of the nutrient cycle?
  1. Carbon dioxide released during the respiration of animals
  2. Nitrogen fixing by bacteria
  3. Fertilizer runoff
  4. Forest fires releasing carbon dioxide
Grade 9 Communities, Populations, and Ecosystems
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