Biodiversity Overview Quiz
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Questions and Answers

What does species richness indicate about an ecosystem?

  • A high number of similar species
  • A dominance of one particular species
  • A wide variety of interdependent species (correct)
  • An overall decline in population numbers

    • What does a high Simpson reciprocal index value suggest about an ecosystem?

  • Increased population density of a single species
  • The ecosystem is highly vulnerable to extinction
  • Complexity in terms of species richness and evenness (correct)
  • Low interdependence among species

    • How does evenness relate to species diversity in an ecosystem?

  • It indicates the total number of species present
  • It signifies a complete absence of dominant species
  • It assumes all species have the same population size
  • It reflects a balance among different species populations (correct)

    • Why is it essential to use numerical values of species diversity in conservation efforts?

    <p>To assess and monitor the health of biological communities</p> Signup and view all the answers

    What role does isolation play in the process of speciation?

    <p>It allows populations to evolve distinct traits independently</p> Signup and view all the answers

    What is the main result of natural selection?

    <p>Beneficial traits are more likely to be passed on.</p> Signup and view all the answers

    What does speciation primarily involve?

    <p>Formation of a new species.</p> Signup and view all the answers

    What evidence indicates that two varieties are separate species?

    <p>They cannot mate due to genetic incompatibility.</p> Signup and view all the answers

    Which of the following describes an endemic species?

    <p>A species adapted to a specific local habitat.</p> Signup and view all the answers

    How does artificial selection differ from natural selection?

    <p>Artificial selection can prioritize traits not useful for survival.</p> Signup and view all the answers

    What is usually a result of mutation within a species?

    <p>Variation that can lead to new traits.</p> Signup and view all the answers

    Which of the following is a goal of artificial selection in agriculture?

    <p>Improving disease resistance and yield.</p> Signup and view all the answers

    What is a key factor that leads to the passing on of beneficial traits in a population?

    <p>Survival and reproduction of individuals with those traits.</p> Signup and view all the answers

    What defines a biological hotspot?

    <p>Places that are under threat but have suffered no extended damage.</p> Signup and view all the answers

    Which of the following criteria is NOT used to identify Key Biodiversity Areas (KBAs)?

    <p>Presence of extinct species.</p> Signup and view all the answers

    What is a significant challenge faced by indigenous people living in rural areas regarding environmental issues?

    <p>Inability to access the legal system.</p> Signup and view all the answers

    Which evidence indicates that we are currently in the Anthropocene epoch?

    <p>Signals from chemical pollution in geological strata.</p> Signup and view all the answers

    What does the theory of evolution state?

    <p>Cumulative changes in genetic composition occur over generations.</p> Signup and view all the answers

    What is the significance of LUCA in evolutionary biology?

    <p>It is the last Universal Common Ancestor of all life.</p> Signup and view all the answers

    Which two factors are generally required for evolution to occur?

    <p>Overproduction of species and competition for limited resources.</p> Signup and view all the answers

    How long is an era in geological terms?

    <p>Shorter than an eon but longer than a period.</p> Signup and view all the answers

    What is one of the main ethical reasons for environmental conservation?

    <p>Justice for nonhumans</p> Signup and view all the answers

    Which organization is characterized by a fast response but cannot enforce binding agreements?

    <p>NGO</p> Signup and view all the answers

    Which funding source primarily supports IGOs?

    <p>Government funding</p> Signup and view all the answers

    What aspect of NGO operations can lead to a confrontational public image?

    <p>Aggressive campaigning methods</p> Signup and view all the answers

    What is a key aesthetic reason for promoting biodiversity?

    <p>The beauty of natural environments</p> Signup and view all the answers

    Which characteristic distinguishes IGOs from NGOs regarding legislation?

    <p>IGOs enforce decisions via law</p> Signup and view all the answers

    Which of the following best illustrates the social importance of biodiversity?

    <p>Supporting indigenous communities</p> Signup and view all the answers

    What is a common misconception about the speed of response of IGOs?

    <p>IGOs are slow due to bureaucratic processes</p> Signup and view all the answers

    What is a major impact of the lionfish on marine ecosystems?

    <p>It competes with coral by consuming fish that would help control algae.</p> Signup and view all the answers

    Which of the following is an effective solution to control lionfish populations?

    <p>Subsidies and legalization for hunting them.</p> Signup and view all the answers

    How did the grey squirrel impact native ecosystems in England?

    <p>It competes with native squirrels for food and resources.</p> Signup and view all the answers

    What economic strategy was mentioned to encourage lionfish hunting?

    <p>Government subsidies for fishing lionfish.</p> Signup and view all the answers

    Which of the following correctly describes a biodiversity hotspot?

    <p>Locations that are often coastal, tropical, and have many endemic species.</p> Signup and view all the answers

    What trend was observed regarding animal populations between 1970 and 2018?

    <p>They have decreased by an average of 69 percent.</p> Signup and view all the answers

    What is an ineffective method of managing invasive species mentioned?

    <p>Transporting invasive species back to their native habitats.</p> Signup and view all the answers

    Why is encouraging public participation in combating invasive species considered effective?

    <p>It leverages economic benefits and enjoyment.</p> Signup and view all the answers

    What is the primary focus of Ex Situ conservation methods?

    <p>Removing species from their natural habitats for conservation</p> Signup and view all the answers

    Which of the following best describes the function of CITES?

    <p>An organization aimed at preventing illegal trades of endangered species</p> Signup and view all the answers

    What is an example of a strategy used in In Situ conservation?

    <p>Protecting flagship species to generate public interest</p> Signup and view all the answers

    What is one key requirement for zoos participating in Ex Situ conservation?

    <p>To provide animals with certain freedoms from discomfort and distress</p> Signup and view all the answers

    Which type of conservation indirectly conserves entire habitats and ecosystems?

    <p>In Situ conservation</p> Signup and view all the answers

    Study Notes

    Biodiversity

    • Biodiversity is the biotic and abiotic diversity per unit area
    • Biotic factors are living factors, such as animals and plants.
    • Abiotic factors are non-living factors, such as rocks and caves.

    Habitat Diversity

    • Habitat diversity is the variety of places where organisms live.
    • Some organisms live in abiotic environments (like caves) and others in biotic environments (like plants).

    Species Diversity

    • Species diversity is the variety of different species in an ecosystem.
    • It is one component of biodiversity.

    Genetic Diversity

    • Genetic diversity is the variety of genes within a species.
    • For example, humans all have eyes, but the variety in their genes leads to varied eye color.
    • Humans have about 39,000 genes, and plants have hundreds to thousands.

    Species Diversity Components

    • Richness and evenness are components of species diversity.
    • High evenness indicates a complex ecosystem with lots of different niches, supporting many species.
    • Low evenness indicates a community dominated by one or a few species.

    Simpson's Index

    • Simpson's index measures biodiversity.
    • Higher values of Simpson's index indicate a more diverse ecosystem.
    • A high index means a complex ecosystem that is stable, whereas a low index suggests an ecosystem that could be at risk of collapse.

    Biodiversity and Human Impacts

    • Human activities can negatively impact biodiversity by altering ecosystems and thus altering the index.
    • Increasing complexity leads to more richness and evenness.
    • Human action can lead to an increase in the Simpson's Index if complexity increases, vice versa.

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    Related Documents

    Biodiversity Notes PDF

    Description

    Test your knowledge on the various aspects of biodiversity, including habitat, species, and genetic diversity. Understand the differences between biotic and abiotic factors and their impact on ecosystems. This quiz will cover essential concepts in the study of biodiversity.

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