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Seventh Grade (Grade 7) Ecology Questions

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Grade 7 Biomes
How is a biome primarily identified?
  1. average precipitation and temperature
  2. characteristic community of organisms, particularly plants
  3. distance from the equator
  4. specific geographical location
Grade 7 Food Chains and Webs
                are organisms that take in energy when they feed on producers or other consumers.
  1. Consumers
  2. Producers
  3. Biotic factors
  4. Abiotic factors
Grade 7 Biogeochemical Cycles
How does carbon dioxide in the atmosphere enter into living organisms?
  1. burning of forests
  2. combustion of fossil fuels
  3. photosynthesis
  4. transpiration
Grade 7 Food Chains and Webs
An example of a decomposer is a
  1. fox.
  2. human.
  3. bacterium.
  4. toad.
Grade 7 Food Chains and Webs
An organism that creates its own food is a
  1. consumer.
  2. producer.
  3. decomposer.
  4. herbivore.
Grade 7 Biotic and Abiotic
Living or once-living organisms in the environment are                   .
  1. biotic factors
  2. antibiotic factors
  3. abiotic factors
  4. scientific factors
Grade 7 Succession
What is ecological succession?
  1. decrease of population over time
  2. change of water levels over time
  3. increase of wind speed over time
  4. decrease and increase of diversity in a population over time
Grade 7 Conservation and Biodiversity
A species that dies out is
  1. mutated.
  2. varied.
  3. adapted.
  4. extinct.
Grade 7 Succession
Primary succession occurs                                                                                   .
  1. before secondary succession, when an environment is fully developed
  2. before secondary succession, when the environment is developing
  3. after secondary succession, when an environment is fully developed
  4. at the same time as secondary succession, when the environment is still developing
Grade 7 Food Chains and Webs
The                    models the number of organisms at each level of a food chain.
  1. food web
  2. food triangle
  3. ecological pyramid
  4. ecological square
Grade 7 Food Chains and Webs
If an owl eats a mouse that eats grass, then owl is considered what?
  1. producer.
  2. 2nd-level consumer.
  3. 1st-level consumer.
  4. decomposer.
Grade 7 Food Chains and Webs
An insect that eats grass is a                    on the trophic pyramid.
  1. producer
  2. primary consumer
  3. secondary consumer
  4. tertiary consumer
Grade 7 Communities, Populations, and Ecosystems
The struggle against other organisms for needed resources is                .
  1. commensalism
  2. competition
  3. mutualism
  4. predation
Grade 7 Food Chains and Webs
What are organisms that eat other organisms?
  1. decomposers
  2. consumers
  3. ecosystem
  4. producers
Grade 7 Succession
What is equilibrium?
  1. disruption in an ecosystem
  2. balance in an ecosystem
  3. plants and animals interacting
  4. none of the above
Grade 7 Biotic and Abiotic
Temperature is an example of what kind of ecosystem condition?
  1. abiotic
  2. habitat
  3. biotic
  4. niche
Grade 7 Food Chains and Webs
Most producers use                 to convert solar energy into chemical or food energy.
  1. the moon
  2. nutrients
  3. minerals
  4. photosynthesis
Grade 7 Biomes
The largest biome on earth is the
  1. tropical rainforest.
  2. grassland.
  3. ocean.
  4. desert.
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