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Chapter 2 Life Science Review

Quiz by Lyndsey Keener

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16 questions
Show answers
  • Q1
    Which of these is a nonliving part of an ecosystem?
    fish
    fungi
    trees
    water
    45s
  • Q2
    One year, an ecosystem receives only a small amount of its usual rainfall. Which of these will MOST LIKELY happen because of the lack of rain?
    Only the animal populations will be reduced in number.
    All animal and plant populations in the area will die.
    Only the plant populations will be reduced in number.
    Both animal and plant populations will be reduced in number.
    45s
  • Q3
    Which of these is an example of two species interacting in an ecosystem?
    One meerkat is standing next to another meerkat.
    The roots of a tree are moving water up to the trunk.
    A lizard is sunning itself on a rock.
    An arctic fox is preying on a lemming.
    45s
  • Q4
    Which of the following is a living part of an ecosystem?
    air
    bacteria
    soil
    rock
    45s
  • Q5
    What is an organism's niche?
    the nest or burrow where an organism sleeps at night
    the role an organism plays in an ecosystem
    the habitat an organism lives in
    the places in an ecosystem where an organism can be found
    45s
  • Q6
    Which of these is a way that competition helps ecosystems?
    Populations of competing species will increase.
    The strongest and healthiest organisms are most likely to survive.
    There will be more food for each individual to eat.
    Prey organisms gradually disappear from the ecosystem.
    45s
  • Q7
    Which of these is an example of symbiosis?
    plants crowding out native species
    birds eating ticks off of a warthog
    bullfrogs eating pond insects
    meerkat populations living together
    45s
  • Q8
    Which of these is NOT a benefit of the symbiotic relationship between the bullhorn acacia tree and acacia ants?
    The ants attract other insects to the tree.
    The tree produces nectar for the ants to eat.
    The thorns on the tree provide nesting sites for the ants.
    The ants sting animals that eat acacia leaves.
    45s
  • Q9
    In the symbiotic relationship between the mistletoe plant and its host tree, how does mistletoe damage its host?
    It infects the tree with disease.
    It blocks the sun from the tree's leaves.
    It takes water and nutrients away from the tree.
    It wraps vines around the tree's trunk that choke the tree.
    45s
  • Q10
    What is the symbiotic relationship between a shark and a remora?
    Remoras attach themselves to sharks and suck their blood.
    Remoras attach to sharks and clean their bellies.
    Remoras ride with sharks to eat the scraps of their prey.
    Remoras hide from sharks so they do not get eaten.
    45s
  • Q11
    Over time, a pond becomes a marsh. Then the land gradually dries, and the marsh becomes a meadow. What is this transition from one ecosystem to another called?
    survival
    community
    replacement
    succession
    45s
  • Q12
    Which change occurs FIRST as an ecosystem recovers from a fire?
    Pines and other trees appear.
    Weeds and grasses die.
    Grass, weeds, and flowers grow.
    Animals come back to the land.
    45s
  • Q13
    When a beaver builds a dam and cuts off a stream, a pond is formed. The pond begins to change almost as soon as it is formed. Which change occurs FIRST?
    Wildflowers grow in the rich soil left behind.
    Mud and sand wash in and make it shallower.
    Cattails and pond reeds begin to grow.
    Red-winged blackbirds come to live near the water.
    45s
  • Q14
    How do invasive species like the zebra mussel affect an ecosystem?
    They use up resources that native species need.
    They form new, beneficial symbiotic relationships.
    They form one-way symbiotic relationships.
    They bring in new resources to help other species.
    45s
  • Q15
    Which of these human actions pollutes the AIR in ecosystems the MOST?
    mowing down meadows to build homes
    burning coal and oil to create electricity
    moving rivers to irrigate crops
    creating landfills to dump trash
    45s

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