Chapter 8 Understanding Populations

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  • 1/10 Questions

    A relationship in which two organisms live in close association is called _____________.

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About This Quiz


There are an estimated 7.6 billion people in the world with china, India and the United States having the highest population. Do you know how one comes to get the true population of an area or country? Take the quiz below on chapter 8 and gauge your understanding on populations.

Chapter 8 Understanding Populations - Quiz

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  • 2. 

    A relationship in which one species benefits and the other speices is neither harmed nor helped is called ____________.

    Explanation
    Commensalism is a type of symbiotic relationship where one species benefits while the other species is neither harmed nor helped. In this relationship, the benefiting species gains an advantage, such as obtaining food or shelter, without causing any harm or providing any benefit to the other species involved. This type of interaction is often seen in nature, where one organism takes advantage of the resources or activities of another organism without affecting it positively or negatively.

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  • 3. 

    Exponential growth is where a population grows faster and faster.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Exponential growth refers to a pattern where a population increases at an accelerating rate over time. This means that the growth rate itself is growing, resulting in a rapid increase in population size. Therefore, the statement that exponential growth is where a population grows faster and faster is correct.

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  • 4. 

    Ants and acacia tress have a mutualistic relationship because

    • They are both adapted to a humid climate.

    • They benefit each other.

    • The ants eat part of the acacia tree.

    Correct Answer
    A. They benefit each other.
    Explanation
    Ants and acacia trees have a mutualistic relationship because they benefit each other. The ants protect the acacia tree from herbivores by attacking and warding off any potential threats. In return, the acacia tree provides shelter and food sources for the ants, such as nectar and specialized structures called Beltian bodies. This mutually beneficial relationship allows both species to thrive and survive in their environment.

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  • 5. 

    The unique role of a species within an ecosystem is its predation.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. The unique role of a species within an ecosystem is not its predation. Predation is just one of the many possible roles a species can have within an ecosystem. Other roles can include being a producer, a decomposer, or a competitor for resources. Each species plays a unique role in maintaining the balance and functioning of the ecosystem.

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  • 6. 

    Biotic potential is the slowest rate at which a population can grow.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Biotic potential refers to the maximum rate at which a population can grow under ideal conditions, not the slowest rate. Therefore, the given statement is incorrect.

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  • 7. 

    Which of the following is an example of coevolution?

    • Flowers that can be pollinated by only one species of insect.

    • Rabbits that invade a new habitat.

    • Bacteria that suddenly mutate in a lab.

    Correct Answer
    A. Flowers that can be pollinated by only one species of insect.
    Explanation
    Coevolution refers to the reciprocal evolutionary changes between two or more species that interact with each other. In this case, the flowers and the insect species have likely evolved together over time. The flowers have developed specific traits that attract and accommodate only one species of insect for pollination, while the insect has likely adapted its behavior or physical characteristics to efficiently pollinate these flowers. This mutual adaptation between the flowers and the insect is an example of coevolution.

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  • 8. 

    The growth rate of a population of geese will probably increase within a year if

    • More birds die than are hatched.

    • Most females lay two eggs instead of three during their nesting season.

    • Several females begin laying eggs at younger ages than their mothers did.

    Correct Answer
    A. Several females begin laying eggs at younger ages than their mothers did.
    Explanation
    If several females begin laying eggs at younger ages than their mothers did, it means that there will be more females reproducing at an earlier age. This will result in an increase in the number of eggs being laid and therefore an increase in the number of geese being hatched. As a result, the growth rate of the population of geese will probably increase within a year.

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  • 9. 

    Explain how the meanings of the words Predator and Prey differ.

  • 10. 

    Explain how two species can compete for the same resources even if they never come in contact with one another.

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  • Apr 09, 2025
    Quiz Edited by
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  • Mar 29, 2011
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    Gford1
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