5.L.2.3 Interactions in Ecosystems
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whitneyhgodfrey
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22 QuestionsShow answers
  • Question 1
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    Q. Eelgrass is a major source of food for birds and turtles in an estuary.  What will most likely happen to the bird and turtle populations if people remove the eelgrass to build a bridge?
    answer choices
    The turtle population will increase, but the bird population will decrease
    Both the bird population and the turtle population will increase
    The bird population will increase, but the turtle population will decrease
    Both populations will decrease
  • Question 2
    60 seconds
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    Q.

    A chemical intended to kill insects and other organisms that damage crops

    answer choices

    nicotine

    pesticide

    sweet tea

    tar

  • Question 3
    30 seconds
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    Q. In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?
    answer choices
    The ecosystem will become overpopulated with snakes
    There will be a decrease in the population of snakes in the ecosystem
    The nutrition of the soil in the ecosystem will decrease
    More types of plants will begin growing in the ecosystem
  • Question 4
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    Q. An organism that feeds off another organism and causes it harm. 
    answer choices
    symbiosis
    host
    parasite
    competition
  • Question 5
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    Q.

    An organism that is often harmed in a symbiotic relationship with another organism.

    answer choices

    parasite

    competition

    host

    symbiosis

  • Question 6
    300 seconds
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    Q. If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live? 
    answer choices
    he population of deer will increase. 
    The population of deer will decrease.
     The population of deer will remain the same.
    The population of deer will become extinct. 
  • Question 7
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    Q. Meadow moles are small mouse-like animals that eat plants and animals. Their niche in an ecosystem is a?
    answer choices
    omnivore
    herbivore
    producer
    scavenger
  • Question 8
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    Q. Which would most likely increase the number of squirrels living in an area?
    answer choices
    cutting down trees that serve as habitats for squirrels.
    planting trees that produce nuts squirrels do not eat.
    Reducing the number of animals that hunt and kill squirrels.
    removing all food sources for squirrels from the area.
  • Question 9
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    Q. Which best explains why many kinds of plants and animals can live together in an ecosystem?
    answer choices
    The plants and animals all care for each other and protect one another.
    The plants and animals are all part of a food chain and depend on each other to live.
    The plants and animals are independent of one another, so they can live together,
    The plants and animals all feed on the same things, so they compete with each other for food.
  • Question 10
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    Q. Wood ducks build their nests in holes in trees near lakes. If some of the  trees were removed from around the lake, how would the wood ducks be affected?
    answer choices
    Wood ducks would become a new species.
    Wood ducks would lay more eggs in each nest.
    Wood ducks would increase their competition for nests.
    Wood ducks would begin building their nests on the ground.
  • Question 11
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    Q. The place in which an organism lives  
    answer choices
    habitat
    population
    ecosystem
    niche
  • Question 12
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    Q. How have desert plants adapted to their environment? 
    answer choices
    by limiting the use of sunlight 
    by storing water 
    by distributing certain nutrients 
    by releasing water 
  • Question 13
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    Q.

    Which is the best example of habitat reduction caused by humans

    answer choices

    Birds and animals flee a forest fire caused by lightning

    Birds become sick from eating insects new to their area

    Fish swimming to breeding grounds are blocked by dams

    A new species of fish migrates up a river competing with native fish or food

  • Question 14
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    Q. What prevents plant growth beneath the trees in thick forests? 
    answer choices
    The trees limit the amount of sunlight that is able to reach the ground. 
    The roots of the tree make it difficult for plants to grow 
    Little water reaches the ground under the trees
    Little water reaches the ground under the trees
  • Question 15
    30 seconds
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    Q.

    Which of the following factors is most likely to decrease the stability of an ecosystem?

    answer choices

    the removal of one species

    an increase in animal biodiversity

    an increase in plant biodiversity

    the removal of one individual animal

  • Question 16
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    Q.

    If most of the phytoplankton from this ecosystem were to die off because of some pollution or climate change event, which of the organisms would be most directly and immediately impacted?

    answer choices

    herring and squid

    copepods and sperm whale

    squid and sperm whale

    herring and copepods

  • Question 17
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    Q.

    A coral reef ecosystem contains many types of organisms that have many different types of interactions. For example, cleaner shrimp live in close proximity to moray eels. The moray eels open their mouths wide and allow the shrimp to clean their teeth and gums. The cleaner shrimp eat the parasites and debris from the mouths of the eels as food. The shrimp and moray eel have what type of interaction?

    answer choices

    commensalism

    predation

    competition

    mutualism

  • Question 18
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    Q.

    There is a population of lions in a South African savanna that eat only impalas and kudu. What do you think is the least likely to happen if all the kudu are killed by humans overhunting them?

    answer choices

    The lions would go extinct due to the lack of kudu

    The impala population would increase

    The lion would rely only on the impalas for food, which could lead to ecological collapse

    The ecosystem would not be impacted

  • Question 19
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    Q.

    Given this example of an ecosystem network, which of the organisms plays a more crucial role than others?

    answer choices

    sperm whale

    herring

    phytoplankton

    squid

  • Question 20
    30 seconds
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    Q.

    You are observing a forest ecosystem and notice that there are mushrooms, which you know to be a fungus, growing on top of a fallen, dead tree. A likely explanation of what is going on would be which of the following choices?

    answer choices

    the mushrooms are competing with the tree for shelter

    the mushrooms’ and the tree’s interaction could be considered parasitism

    the mushrooms are breaking down the dead tree

    the mushrooms are practicing predation

  • Question 21
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    Q.

    A team of Academy scientists embarks on an expedition to an uninhabited island, to document the biodiversity of the area. They land on the rocky shore that is teeming with life. How might scientists calculate the species richness of the rocky shore ecosystem?

    answer choices

    by counting the total number of individual organisms living on the rocky shore.

    by counting the total number of different species within the rocky shore ecosystem.

    by calculating the amount of energy and matter that is flowing within the ecosystem.

    by calculating the number of individual predators, prey, and decomposers.

  • Question 22
    30 seconds
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    Q.

    Which of the following best describes the interaction between these two organisms pictured here?

    answer choices

    competition

    commensalism

    mutualism

    parasitism

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