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Ninth Grade (Grade 9) Ecology Questions

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Grade 9 Biomes
Which biome can be represented by the climograph below?
  1. Cold Desert
  2. Temperate Rainforest
  3. Boreal Forest
  4. Hot Desert
Grade 9 Communities, Populations, and Ecosystems
Which of these factors increases the size of a population?
  1. birthrate
  2. emigration
  3. death rate
  4. carrying capacity
Grade 9 Food Chains and Webs
Energy is lost from one organism to another as
  1. heat.
  2. waves.
  3. sound.
  4. dispersion.
Grade 9 Food Chains and Webs
What is the ultimate source of energy in any food chain?
  1. the sun
  2. producers
  3. consumers
  4. decomposers
Grade 9 Biogeochemical Cycles
Which nutrient cycle needs a nutrient to be fixed prior to use by producers and consumers?
  1. carbon
  2. nitrogen
  3. phosphorus
  4. water
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
  4. weather and climate
Grade 9 Communities, Populations, and Ecosystems
With unlimited resources and without disease and predation, what will likely happen to a population of bacteria?
  1. logistic growth
  2. exponential growth
  3. extinction
  4. endangerment
Grade 9 Food Chains and Webs
Herbivores are lower on the food chain than producers.
  1. True
  2. False
Grade 9 Biomes
An area with its own unique geography and climate is a
  1. biome.
  2. continent.
  3. latitude.
  4. mass.
Grade 9 Communities, Populations, and Ecosystems
The maximum amount of individuals an environment can support is the
  1. population size.
  2. carrying capacity.
  3. population model.
  4. population density.
Grade 9 Biotic and Abiotic
What is an example of a biotic factor?
  1. air
  2. water
  3. grass
  4. soil
Grade 9 Biomes
Which description is used to identify a biome?
  1. average precipitation and temperature
  2. characteristic community of organisms, particularly plants
  3. distance from the equator
  4. specific geographical location
Grade 9 Biotic and Abiotic
A limiting factor that depends on population size is                    .
  1. niche-dependent
  2. density-dependent
  3. habitat-independent
  4. density-independent
Grade 9 Food Chains and Webs
A                 is a feeding stage within a food chain or food web.
  1. kill zone
  2. food level
  3. trophic level
  4. benthic zone
Grade 9 Food Chains and Webs
A consumer is an organism that can make its own food.
  1. True
  2. False
Grade 9 Biomes
The biosphere consists of all the spheres except the                .
  1. astrosphere
  2. ecosphere
  3. hydrosphere
  4. lithosphere
Grade 9 Biogeochemical Cycles
In an ecosystem, bacteria that inhabit the roots of certain plants and soil play an essential role in cycling
  1. carbon dioxide.
  2. nitrogen.
  3. oxygen.
  4. phosphorus.
Grade 9 Biotic and Abiotic
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
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