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Eighth Grade (Grade 8) Communities, Populations, and Ecosystems Questions

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Grade 8 Communities, Populations, and Ecosystems
A community of organisms living together with their physical environment is a(n)                .
  1. biome.
  2. biosphere.
  3. ecosystem.
  4. atmosphere.
Grade 8 Communities, Populations, and Ecosystems
The pond where a catfish lives is best described as a(n)
  1. habitat.
  2. population.
  3. ecosystem.
  4. organism.
Grade 8 Communities, Populations, and Ecosystems
Which series lists the levels of organization in an ecosystem from the smallest unit to the largest?
  1. population, organism, community, ecosystem
  2. organism, population, ecosystem, community
  3. organism, community, population, ecosystem
  4. organism, population, community, ecosystem
Grade 8 Communities, Populations, and Ecosystems
What refers to a community of organisms, along with their nonliving, abiotic environment?
  1. ecosystem
  2. geology
  3. model
  4. astronomy
Grade 8 Communities, Populations, and Ecosystems
A(n)                 is all the populations of different species that live in an ecosystem.
  1. organism
  2. community
  3. habitat
  4. ecology
Grade 8 Communities, Populations, and Ecosystems
What is the role a species plays in its ecosystem?
  1. natural selection
  2. adaptation
  3. niche
  4. none of the above
Grade 8 Communities, Populations, and Ecosystems
The maximum length of time an organism can be expected to live is a
  1. response.
  2. life span.
  3. development.
  4. metabolism.
Grade 8 Communities, Populations, and Ecosystems
Competition for food, living space, or other resources can                         .
  1. limit population growth
  2. cause exponential growth
  3. stop symbiosis
  4. create a new ecosystem
Grade 8 Communities, Populations, and Ecosystems
An ecosystem goes through a flood. This bad weather event is an example of a
  1. niche.
  2. biotic factor.
  3. climax community.
  4. limiting factor.
Grade 8 Communities, Populations, and Ecosystems
A group of lizards living in a desert is an example of a
  1. population.
  2. shelter.
  3. succession.
  4. food web.
Grade 8 Communities, Populations, and Ecosystems
What are the five levels of environmental organization, from largest to smallest?
  1. biosphere, ecosystem, community, population, organism
  2. ecosystem, biosphere, population, organism, community
  3. biosphere, population, ecosystem, community, organism
  4. biosphere, ecosystem, population, community, organism
Grade 8 Communities, Populations, and Ecosystems
                 are things that prevent a population from growing any larger.
  1. Predators
  2. Limiting factors
  3. Biospheres
  4. Symbiosis
Grade 8 Communities, Populations, and Ecosystems
                is the study of interactions among organisms and their environments.
  1. Ecology
  2. Biosphere
  3. Habitat
  4. Ecosystem
Grade 8 Communities, Populations, and Ecosystems
A(n)                 is all the populations of different species that live in an ecosystem.
  1. population
  2. community
  3. habitat
  4. ecology
Grade 8 Communities, Populations, and Ecosystems
Which factor allows for an increase in population?
  1. immigration
  2. emigration
  3. death
  4. none of the above
Grade 8 Communities, Populations, and Ecosystems
A                 is a place where an organism lives.
  1. habitat
  2. prey
  3. predator
  4. decomposer
Grade 8 Communities, Populations, and Ecosystems
What is the maximum number of individuals an ecosystem can support?
  1. population density
  2. carrying capacity
  3. succession limit
  4. habitat maximum
Grade 8 Communities, Populations, and Ecosystems
How are limiting factors and carrying capacity similar?
  1. They both limit the number of animals.
  2. They both allow more animals.
  3. They both kill animals.
  4. They both create more deaths than births.
Grade 8 Communities, Populations, and Ecosystems
A                 describes the relational position of a species or population in an ecosystem.
  1. competition
  2. symbiosis
  3. prey
  4. niche
Grade 8 Communities, Populations, and Ecosystems
Which is NOT a population limiting factor?
  1. food
  2. water
  3. space
  4. sunlight
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