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Ninth Grade (Grade 9) Biotic and Abiotic Questions

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Grade 9 Biotic and Abiotic
Which is not an abiotic factor that affects life in an ecosystem?
  1. water
  2. inorganic nutrients
  3. temperature
  4. food supply
Grade 9 Biotic and Abiotic
Which feature is a biotic factor in an ecosystem?
  1. soil
  2. atmosphere
  3. temperature
  4. number of producers
Grade 9 Biotic and Abiotic
What are the two most significant abiotic factors that influence life in a biome?
  1. temperature and precipitation
  2. temperature and pressure
  3. temperature and latitude
  4. latitude and longitude
Grade 9 Biotic and Abiotic
Plants, animals, and microbes are all examples of
  1. abiotic factors.
  2. biotic factors.
  3. biomes.
  4. niches.
Grade 9 Biotic and Abiotic
Which is not a need of an organism?
  1. food
  2. shelter
  3. species
  4. water
Grade 9 Biotic and Abiotic
A limiting factor that affects all population in similar ways, regardless of population size, is
  1. niche-independent.
  2. density-dependent.
  3. habitat-dependent.
  4. density-independent.
Grade 9 Biotic and Abiotic
Which of the following elements is a biotic factor in a California desert?
  1. horned lizard
  2. hot temperature
  3. low rainfall
  4. polar bear
Grade 9 Biotic and Abiotic
Aquatic ecosystems are divided into zones based on two basic limiting factors:                          
  1. nutrients and oxygen.
  2. nutrients and sunlight.
  3. temperature and oxygen.
  4. temperature and sunlight.
Grade 9 Biotic and Abiotic
Which is a biotic factor in a Maryland pine forest ecosystem?
  1. bacteria
  2. nitrogen
  3. rainfall
Grade 9 Biotic and Abiotic
What level of the ecological systems of organization includes both living and nonliving factors?
  1. individual
  2. community
  3. ecosystem
  4. population
Grade 9 Biotic and Abiotic
Which element is NOT needed for an organism's survival?
  1. energy
  2. shelter
  3. space
  4. technology
Grade 9 Biotic and Abiotic
Which element is needed for an organism's survival?
  1. communication
  2. shelter
  3. sight
  4. technology
Grade 9 Biotic and Abiotic
Ozone is significantly reduced by clouds.
  1. True
  2. False
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