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energy flow and nutrient cycles

Quiz by Heather Hawk

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25 questions
Show answers
  • Q1
    Why do predators need plants in their ecosystem?
    Plants are producers
    Predators do not need plants
    Plants catch food for predators
    Predators provide food for the plants
    30s
  • Q2
    _____ break down the waste and the remains of dead organisms and return nutrients to the soil.
    Decomposers
    Producers
    Scavengers
    Consumers
    30s
  • Q3
    Carnivores are animals that eat only _____________.
    vegetables
    producers
    plants
    herbivores
    30s
  • Q4
    A tadpole, a water beetle, and a snail are all examples of what level of consumers?
    Secondary Consumers
    Tertiary Consumers
    Producers
    Primary Consumers
    30s
  • Q5
    Decomposers help which organism the most with the products they create by breaking down dead organisms or waste?
    Primary Consumers
    Tertiary Consumers
    Secondary Consumers
    Producers
    30s
  • Q6
    What do the arrows in a food chain show?
    how many different organisms an organism eats
    how energy flows through an ecosystem
    which organism eats which organism
    where organisms live
    30s
  • Q7
    Describe the relationship between bacteria and humans.
    They are always harmful
    They are always helpful
    Humans do not use or need bacteria
    They can help and harm
    30s
  • Q8
    In the food web below, which organism receives the least amount of total energy?
    Question Image
    Fox
    Mice
    Grass
    Grasshopper
    30s
  • Q9
    In this food web, which organism receives the most total energy? Carrots, Rabbits, birds, or owl?
    Question Image
    Owl
    Birds
    Carrots
    Rabbits
    30s
  • Q10
    Which food chain is included in the food web above?
    Question Image
    fox, rabbit, carrot
    carrots, mice, fox
    grass, grasshopper, fox
    Grains, grasshopper, bird, fox
    30s
  • Q11
    In the food web above, what would happen if the number of mice, rabbits, and grasshoppers all increased?
    Question Image
    The number of producers would decrease
    The number of owls and foxes would also decrease
    mice, rabbits, and grasshoppers would get fat
    Nothing would change - there would just be more mice, rabbits, and grasshoppers
    30s
  • Q12
    What releases oxygen into the air?
    Producers
    Sun
    Consumers
    Water
    30s
  • Q13
    Why does the energy pyramid get smaller at the top?
    the organisms at each level use some energy for survival and lose some energy as heat, so there is less and less energy available at the higher levels
    There are fewer and fewer organisms at each level.
    It represents how many of each organism can survive on a certain amount of energy at each level.
    It doesn't mean anything. It's just a cute way to draw it.
    30s
  • Q14
    In the energy pyramid shown here, which organisms are the primary consumers?
    Question Image
    large, green fish
    hawks
    algae and other green aquatic plants
    snails, small fish, insects
    30s
  • Q15
    In the energy pyramid above, which organism would have the least amount of energy available?
    Question Image
    hawk
    snail
    algae and other green aquatic plants
    medium fish
    30s

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