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OST: Life Science Review

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  • An organism that eats only meat.
    omnivore
    decomposer
    herbivore
    carnivore
  • The harmed species in a parasitic relationship is called:
    consumer
    host
    decomposer
    parasite
  • Hermit carbs live in snail shells that the snail has left behind. The crab gets a home and the snail is unaffected.
    Parasitism
    Commensalism
    Mutualism
    Predator-Prey
  • What do the arrows in a food chain show?
    The transfer of energy
    What eats what
    How many organisms are present
  • What is likely to happen to the population of foxes if the population of rabbits decreases?
    It will stay the same.
    It will increase.
    It will decrease.
  • In a food web or food chain the arrow always points toward?
    The eaten (prey)
    The eater (predator)
  • Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
    Commensalism
    Predator-Prey
    Mutualism
    Parasitism
  • A relationship between two organisms where one is helped and the other is unaffected.
    commensalism
    competition
    mutualism
    parasitism
  • Decomposers are important in the food chain because they ___________.
    produce their own food using light from the sun.
    are microscopic and other organisms can't consume them.
    stop the flow of energy from one organism to another.
    break down dead organisms & recycle nutrients into the soil.
  • A relationship between two organisms where both organisms benefit.
    mutualism
    parasitism
    commensalism
    competition
  • Which of the following in NOT an example of a symbiotic relationship?
    A mother bear caring for her cub.
    A tapeworm living in a cow's intestines.
    Bees eating nectar and pollinating flowers
    A bird building a nest in a tree.
  • Energy from the plantain is transferred to the frog through which organsim?
    greenfly
    ladybird
    butterfly
    grasshopper
  • Which organism receives the least amount of energy from the producers?
    Mouse
    Rabbit
    Grasshopper
    Hawk
  • Organism that is hunted and killed for food and nutrients
    Prey
    Predator
    Decomposer
    Producer
  • Which organism in the food web is an omnivore?
    frogsalamander
    snake
    trout
  • An organism that eats only plants.
    omnivore
    herbivore
    decomposer
    carnivore
  • How many prey does the fox have?
    1
    3
    4
    2
  • An organism that causes ecological or economic harm in a new environment where it is not native.
    Invasive Species
    Threatened Species
    Endangered Species
    Extinct Species
  • The bacteria in our large intestine break down food that we consider waste. During this process, vitamins are released that we absorb into our bloodstream. This is an example of which symbiotic relationship?
    Parasitism
    Commensalism
    Mutualism
    Predator-Prey
  • Plants are producers because they make their own food. What is the prcocess plants use to make their own food?
    respiration
    symbiosis
    transpiration
    photosynthesis
  • An organism that eats only meat.
    carnivore
    herbivore
    omnivore
    decomposer
  • A relationship between two organisms where one is helped and the other is harmed.
    parasitism
    competition
    mutualism
    commensalism
  • What is likely to happen to the population of thrushes if the population of slugs increases?
    It will stay the same.
    It will increase.
    It will decrease.
  • An organism that must eat to obtain energy is known as _________.
    Producer
    Consumer
  • Ostriches and gazelles eat next to each other. They both watch out for danger.
    Mutualism
    Predator-Prey
    Parasitism
    Commensalism