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Ninth Grade (Grade 9) Biotic and Abiotic Questions

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Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Which of these refer to the biotic factors of an ecosystem?
  1. The living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism.
  2. Any living part of an environment.
  3. Representation of the number of individual organisms in each trophic level of an ecosystem.
  4. An organism that eats only meat
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, and is not just the pattern of spatial arrangement of remaining habitat.
  2. A species that historically lives 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. Nonliving physical or chemical condition in an environment.
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Which example shows a relationship between both an abiotic and biotic factor in an ecosystem?
  1. An insect is food for a salmon.
  2. Water carries a rock downstream.
  3. A tree removes a gas from the air.
  4. A flower makes food for a butterfly.
Grade 9 Biotic and Abiotic
Which is a biotic factor operating within an ecosystem?
  1. the type of climate in a given region
  2. the carnivores that consume other animals
  3. the amount of helium gas in the air
  4. the rate of flow of water in a river
Grade 9 Biotic and Abiotic
Which of the following is NOT an abiotic factor?
  1. moisture
  2. air currents
  3. predators
  4. temperature
  5. light
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Which of the following is NOT a characteristic of life?
  1. Movement
  2. Response to a stimulus
  3. Energy Use
  4. Reproduction
Grade 9 Biotic and Abiotic
What is a biosphere?
  1. Any individual living thing
  2. All organisms and the parts of earth where they exist
  3. A chemical process
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Which is a biotic factor that might affect the life of water-dwelling organisms?
  1. temperature of the water
  2. speed of water current
  3. pollutants in water
  4. bacterial population in water
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
Grade 9 Biotic and Abiotic
A rodent population leaves an ecosystem due to decreased temperatures and increased rain. Which best explains why the rodents left?
  1. increase in predation
  2. decrease in parasitism
  3. change in biotic factors
  4. change in abiotic factors
Grade 9 Biotic and Abiotic
Which of the following is an abiotic factor of an ecosystem?
  1. weather
  2. number of producers
  3. number of predators
  4. decomposers
Grade 9 Biotic and Abiotic
Which of these is not an abiotic factor that affects life in an ecosystem?
  1. Water
  2. Inorganic Nutrients
  3. Temperature
  4. Food Supply
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