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Biodiversity, definition, importance and how humans have influenced biodiversity

Quiz by John Stegmaier

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17 questions
Show answers
  • Q1
    What does biodiversity refer to?
    The health of human populations
    Only the number of different species in a region
    The variety of life in the world or in a particular habitat or ecosystem
    The total biomass of an ecosystem
    30s
  • Q2
    Why is biodiversity important for ecosystems?
    It contributes to ecosystem stability and resilience
    It guarantees higher temperatures in habitats
    It simplifies food webs and interactions
    It prevents all species from going extinct
    30s
  • Q3
    How have humans negatively influenced biodiversity?
    By creating more natural reserves
    Through habitat destruction and pollution
    Through conservation efforts and sustainable practices
    By improving agricultural techniques
    30s
  • Q4
    What is one major consequence of declining biodiversity?
    Improved agricultural production and yields
    Greater adaptability of all species
    Increased vulnerability of ecosystems to diseases and pests
    Decreased competition among species
    30s
  • Q5
    What is one way that restoring habitats can benefit biodiversity?
    It helps to reintroduce native species and promotes ecological balance
    It makes the ecosystem less complex
    It guarantees a doubling of species populations
    It eliminates all invasive species immediately
    30s
  • Q6
    What role do keystone species play in biodiversity?
    They have no effect on other species
    They cause the extinction of all other species
    They have a disproportionately large impact on their ecosystem relative to their abundance
    They are the most abundant species in an ecosystem
    30s
  • Q7
    Which activity is a primary driver of biodiversity loss globally?
    Deforestation for agriculture and urban development
    Planting cover crops to enhance soil fertility
    Establishing protected marine areas
    Reforestation efforts by local communities
    30s
  • Q8
    What is a potential benefit of high biodiversity in agricultural systems?
    Lower productivity of farms
    Increased resilience to pests and diseases
    Guaranteed profits for farmers
    Reduced variety of crops and livestock
    30s
  • Q9
    Which of the following is a direct effect of climate change on biodiversity?
    Altered habitats leading to species migration or extinction
    Increased stability of ecosystems
    Enhanced growth rates of all plants
    More predictable seasons for all species
    30s
  • Q10
    What is an example of how invasive species can affect local biodiversity?
    They enhance food sources for native wildlife
    They contribute to habitat restoration efforts
    They always coexist peacefully with native species
    They can outcompete native species for resources
    30s
  • Q11
    What is one way that human activities contribute to the extinction of species?
    Planting more trees than ever before.
    Creating wildlife preserves.
    Overexploitation of resources, such as overfishing and hunting.
    Restoring habitats to their original state.
    30s
  • Q12
    Which of the following actions can help protect biodiversity?
    Reducing regulations on hunting and fishing.
    Establishing protected areas and wildlife reserves.
    Promoting monoculture farming practices.
    Increasing urban development in natural habitats.
    30s
  • Q13
    Why is genetic diversity important within a species?
    It limits reproduction among individuals.
    It has no real impact on the survival of the species.
    It enhances the ability of a species to adapt to environmental changes.
    It decreases the chances of disease outbreaks.
    30s
  • Q14
    What role do keystone species play in maintaining biodiversity within an ecosystem?
    Their extinction has no impact on the ecosystem.
    They have a disproportionately large impact on their environment relative to their abundance.
    They are always the largest species in the ecosystem.
    They do not interact with other species.
    30s
  • Q15
    What is a potential consequence of extinction in an ecosystem?
    It can lead to a cascade effect that disrupts the balance of the ecosystem.
    It always enhances biodiversity.
    It only affects the extinct species.
    It has no effect on other species.
    30s

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