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7th Grade DCA 6 Review

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  • Suppose your primary consumers would have 8,900 J of energy, how much energy would the Producers have?
    89,000 J
  • What would you classify the seal as? (What trophic level)
    Tertiary consumer (Top predator)
  • If the Tertiary consumers have .8 J of energy, how much would the Secondary consumers have?
    8 J
  • In an energy pyramid, which organisms occupy the bottom trophic level?
    Producers
  • If grasshoppers have 1,000 J of energy, how much would the top predator have?
    10 J
  • What is the name of the organisms that belong in Trophic level B?
    Primary consumers
  • Decomposers are organisms that -
    break down dead matter and return nutrients back to the soil
  • Carnivores are organisms that -
    only eat meat
  • Why do we lose 90% of energy in the energy pyramid?
    Lose energy through heat, body movement, digestion, and/or body processes.
  • The least energy is available at which trophic level?
    Top predator or the very top level
  • Herbivores are organisms that -
    eat only plants
  • Which trophic level contains the most energy available?
    Trophic level A/Producers
  • Which trophic level contains the least energy available?
    Trophic level D/Tertiary consumers/Apex predators
  • Hawks receive energy directly from
    Frogs, lizards, or spiders
  • What is the name of the organisms that belong in Trophic level A?
    Producers
  • What do the arrows mean in a food chain/web?
    Energy flow
  • In an energy pyramid, which organisms occupy the trophic level BELOW the tertiary consumers
    Secondary consumers
  • What trophic level would the Herbivores be classified as?
    Primary Consumers
  • Farmers breeding the largest tomato would be an example of natural selection or artificial selection?
    Artificial selection
  • Spiders indirectly receive energy from
    Grasses or shrubs
  • What do the arrows mean in a food web or food chain?
    Where energy is flowing. DO NOT accept "what eats what"
  • Name 2 primary consumers from this diagram
    Rabbit, Mice, Grasshopper, or bird
  • What's the secondary consumer in this food chain?
    Mouse
  • What is eating the grasshopper?
    Owls and/or birds (can name one of them)
  • What's the producer in this food chain?
    Fern
  • What's the primary consumer in this food chain?
    Cricket
  • What is the name of the organisms that belong in Trophic level C?
    Secondary consumers
  • What is the name of the organisms that belong in Trophic level D?
    Tertiary consumers
  • If the producers start with 54,673 J of energy, how much energy would the frogs have?
    546 or 546.7 J
  • Humans breeding dogs would be an example of artificial or natural selection?
    Artificial selection
  • The most energy is available at which trophic level?
    Producers
  • What is the producer in this food web?
    Phytoplankton
  • A butterfly that is camouflaged will survive and reproduce is an example of artificial selection or natural selection?
    Natural selection
  • If the Tertiary consumer in this energy pyramid had 9 J of energy, how much energy would the Primary Consumers have?
    900 J
  • Insects that survived a wildfire will survive and reproduce is an example of artificial selection or natural selection?
    Natural selection
  • Suppose the producers have about 65,902 J of energy, how much energy would the tertiary consumers have?
    65.902 J
  • If the frogs have 292 J of energy, how much would the producers have?
    29,200 J
  • Give an example of a decomposer
    Mushrooms, bacteria, or earthworms.
  • Suppose the producers have about 25,000 J of energy, how much energy would the secondary consumers receive?
    250 J
  • Only ____ percent of energy is passed on from one organism to another throughout the trophic levels.
    10
  • What are all of the producers in this food web?
    Carrots, grasses, and grains
  • Omnivores are organisms that -
    eat both plants and animals
  • In an energy pyramid, which organisms occupy the trophic level ABOVE producers?
    Primary consumers
  • What is a secondary consumer?
    Eats tertiary consumers
    Eats producers only
    Makes their own food
    Eats primary consumers
  • Raccoons indirectly receive energy from what?
    Mice
    Lizards
    Frogs
    Spiders
  • What is considered to be the top predator in this diagram?
    Shark
  • Where do plants and all living things obtain their energy from?
    The sun
  • Mushrooms and bacteria are considered what?
    Decomposers
  • What would you classify the tuna as? (What trophic level?)
    Tertiary consumer or Secondary consumer
  • Lizards directly receive energy from
    Grasshoppers or mice
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