CH 9: Biodiversity
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Questions and Answers

What does species diversity refer to?

  • Variety of genes within a single species
  • Variety of species within a specific region (correct)
  • Variety of ecosystems within a geographical area
  • Variety of life forms on Earth
  • Which type of diversity enables a species to adapt to changing environmental conditions?

  • Species diversity
  • Variation in ecosystems
  • Ecological diversity
  • Genetic diversity (correct)
  • What defines a species?

  • Physical environment
  • Ecosystem characteristics
  • Shared gene pool (correct)
  • Climate adaptation
  • Which type of biodiversity refers to the variety of living organisms in an area along with their physical environment?

    <p>Ecological diversity</p> Signup and view all the answers

    How does genetic diversity contribute to a species' ability to adapt?

    <p>By providing variations in genes for adaptation</p> Signup and view all the answers

    What aspect of biodiversity has changed throughout history?

    <p>Species diversity</p> Signup and view all the answers

    Which factor influences biodiversity distribution on Earth?

    <p>Climate, geography, and presence of other species</p> Signup and view all the answers

    What percentage of the Earth's total surface area does South Africa occupy?

    <p>1%</p> Signup and view all the answers

    Which of the following biomes is NOT found in South Africa?

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

    How many species of flowering plants are found in South Africa?

    <p>20,300</p> Signup and view all the answers

    Which of the following is NOT a benefit of conserving biodiversity?

    <p>Promoting habitat destruction</p> Signup and view all the answers

    Which of the following is NOT a threat to biodiversity?

    <p>Biodiversity conservation</p> Signup and view all the answers

    How many species of mammals are found in South Africa?

    <p>243</p> Signup and view all the answers

    Which of the following is an endemic species in South Africa?

    <p>Cape sugarbird</p> Signup and view all the answers

    What is the significance of the Karoo and the Cape regions in South Africa?

    <p>They are critical biodiversity hotspots</p> Signup and view all the answers

    What percentage of the world's known bird, fish, and plant species are housed in South Africa?

    <p>10%</p> Signup and view all the answers

    Which region in South Africa is highlighted as a critical biodiversity hotspot?

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

    How many insect species are documented in South Africa?

    <p>90,000</p> Signup and view all the answers

    Which of the following biomes is NOT mentioned as present in South Africa?

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

    What is the significance of endemic species in an ecosystem?

    <p>They are less vulnerable to extinction</p> Signup and view all the answers

    How many mammal species are threatened in the South African region?

    <p>250</p> Signup and view all the answers

    What is the primary focus of genetic diversity?

    <p>The variations in genes within a single species</p> Signup and view all the answers

    Which type of biodiversity includes all the genetic information shared among its members?

    <p>Species diversity</p> Signup and view all the answers

    What is the main factor that shapes an ecosystem?

    <p>The landscape and climate of a geographical area</p> Signup and view all the answers

    How does genetic diversity contribute to a species' long-term survival?

    <p>By enabling adaptation to changing environmental conditions</p> Signup and view all the answers

    Which type of biodiversity is influenced by factors such as climate, geography, and the presence of other species?

    <p>Ecological diversity</p> Signup and view all the answers

    What is the primary focus of ecological diversity?

    <p>The variety of ecosystems found within a geographical area</p> Signup and view all the answers

    Which type of biodiversity is most directly related to the process of evolution?

    <p>Genetic diversity</p> Signup and view all the answers

    Which type of diversity is most directly responsible for the evolutionary process?

    <p>Genetic diversity</p> Signup and view all the answers

    Which type of diversity is most directly influenced by the presence of other species?

    <p>Ecological diversity</p> Signup and view all the answers

    Which type of diversity includes the gene pool of a species?

    <p>Species diversity</p> Signup and view all the answers

    Which type of diversity is most directly related to the variety of genes within a species?

    <p>Genetic diversity</p> Signup and view all the answers

    Which type of diversity is most directly influenced by the landscape and climate?

    <p>Ecological diversity</p> Signup and view all the answers

    Which type of diversity is most directly related to the ability of a species to adapt to changing environmental conditions?

    <p>Genetic diversity</p> Signup and view all the answers

    Which type of diversity is most directly related to the landscape, climate, and all the living organisms in that area along with their physical environment?

    <p>Ecological diversity</p> Signup and view all the answers

    Which species in South Africa is considered both endemic and an indicator species for habitat quality?

    <p>Cape sugarbird</p> Signup and view all the answers

    Which South African biome is distinguished by its high concentration of succulent plants?

    <p>Succulent Karoo</p> Signup and view all the answers

    Which South African biome is most vulnerable to climate change due to its dependence on specific rainfall patterns?

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

    Which conservation strategy is specifically designed to preserve a representative sample of South Africa's biodiversity?

    <p>Systematic conservation planning</p> Signup and view all the answers

    Which South African marine ecosystem is most at risk from invasive species due to its unique biodiversity?

    <p>Kelp forests</p> Signup and view all the answers

    Which South African plant species is considered a keystone species due to its significant role in supporting other species?

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

    Which South African bird species is considered a flagship species for conservation efforts due to its cultural and ecological significance?

    <p>Blue crane</p> Signup and view all the answers

    Which South African insect species is considered a keystone species due to its role in pollination and maintaining ecosystem balance?

    <p>Dung beetle</p> Signup and view all the answers

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