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Ninth Grade (Grade 9) Ecology Questions

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Grade 9 Biotic and Abiotic
Grade 9 Food Chains and Webs
Which of the following statements correctly describes an autotroph?
  1. It is an organism that makes its own food.
  2. It is an organism that eats other organisms.
  3. It is an organism that eats decaying matter.
  4. None of the above.
Grade 9 Food Chains and Webs
What is tha producer?
  1. Any organism
  2. Any organism that obtains energy
  3. Any organism that obtains energy from other life forms
  4. Any organism that produces its own food
Grade 9 Symbiosis
Grade 9 Symbiosis
Grade 9 Biotic and Abiotic
Which of these refers to the biotic factors of an ecosystem?
  1. The idea of two dissimilar organisms living together, as in mutualism, commensalism, amensalism, or parasitism.
  2. Any living part of an environment.
  3. A representation of the number of individual organisms in each trophic level of an ecosystem.
  4. An organism that eats only meat.
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 Biotic and Abiotic
Which of these describes the abiotic factors of an ecosystem?
  1. An umbrella term describing the complete process by which habitat loss results in the division of large, continuous habitats into a greater number of smaller patches of lower total area, isolated from each other by a matrix of dissimilar habitats, rather than just the patterns of spatial arrangement of the remaining habitat.
  2. A species that historically lived in one place, but that has been moved to a new geographic location, due to human interference.
  3. An environmental factor that tends to limit population size.
  4. The nonliving physical or chemical conditions of an environment.
Grade 9 Conservation and Biodiversity
Which of the following refers to the variety of organisms within an ecosystem?
  1. renewable resource
  2. biodiversity
  3. population
  4. ecology
Grade 9 Food Chains and Webs
Grade 9 Food Chains and Webs
Grade 9 Food Chains and Webs
Organisms that can produce their own food are known as
  1. heterotrophs
  2. autotrophs
  3. decomposers
  4. consumers
Grade 9 Biogeochemical Cycles
The biogeochemical cycles do not include
  1. cycles caused by human activity
  2. geological processes
  3. the destruction of nutrients
  4. chemical and physical processes
Grade 9 Food Chains and Webs
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