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Biotic and Abiotic Factors Quiz (Grade 9) (Grade 9)

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Biotic and Abiotic Factors Quiz (Grade 9)

A certain plant needs moisture, carbon dioxide, oxygen light, and minerals to survive. This scenario shows that a living organism depends on which of the following?
  1. abiotic factors
  2. biotic factors
  3. carnivore-herbivore relationships
  4. symbiotic relationships
Which of the following situations show a biotic factor operating within an ecosystem?
  1. the kind of climate in a given region
  2. carnivores that eat other animals
  3. the concentration of hydrogen gas in the air
  4. the rate of water flow in a body of water
During a long period when there is no rainfall, a mountain lion may temporarily leave its usual hunting territory to drink from a farm pond. To what is this behavior probably due?
  1. its need to find different foods to eat
  2. the change in an abiotic factor in its environment
  3. its need to find a new habitat
  4. the change in a biotic factor in its environment
A rodent population leaves an ecosystem because of decreased temperatures and increased rain. Which of the following best explains why the rodents left?
  1. an increase in predation
  2. a decrease in parasitism
  3. a change in biotic factors
  4. a change in abiotic factors
Which example shows a relationship between 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.
Which of these phrases describes the biotic factors of an ecosystem?
  1. two dissimilar organisms living together, as in mutualism, commensalism, amensalism, or parasitism
  2. any living part of an environment
  3. the number of individual organisms in each trophic level of an ecosystem
  4. an organism that eats only meat
Which of these phrases describes the abiotic factors of an ecosystem?
  1. an environmental factor that tends to limit population size
  2. the nonliving physical or chemical conditions of an environment
  3. a species that lived in one place but that has moved to a new geographic location because of human interference
  4. 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
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
Which of the following biotic factors might affect the life of water-dwelling organisms?
  1. pollutants in the water
  2. temperature of the water
  3. speed of the water current
  4. bacterial population in the water
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

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