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Factors Limiting Population Growth quiz #2 Flashcards

Factors Limiting Population Growth quiz #2
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  • How does competition limit the number of individuals in populations?

    Competition limits population size by reducing resource availability, leading to increased death rates and decreased birth rates as population density increases.
  • What would be limiting factors for plant growth?

    Limiting factors for plant growth include resource availability such as water, nutrients, and space, which are density dependent factors.
  • Which of the following is an example of a density-independent limitation on a population? A) Competition B) Disease C) Natural disaster D) Predation

    C) Natural disaster
  • What limiting factor is impacting the fur seal population the most?

    The fur seal population is most impacted by density dependent factors such as competition for resources and predation.
  • Which of the following is the best example of a density-independent factor limiting population size? A) Predation B) Disease C) Earthquake D) Competition

    C) Earthquake
  • What is the main difference between density dependent and density independent factors?

    Density dependent factors' impact varies with population density, while density independent factors affect populations equally regardless of density.
  • How do density dependent factors relate to carrying capacity?

    Density dependent factors help establish carrying capacity by regulating population size as density increases.
  • What type of factors are typically abiotic in nature?

    Density independent factors are typically abiotic, such as natural disasters and temperature extremes.
  • Why do density independent factors cause sudden changes in population size?

    Density independent factors cause sudden changes because they impact populations equally, regardless of density, often through random ecological events.
  • How do density dependent factors affect high-density populations?

    Density dependent factors have a greater impact on high-density populations, intensifying as they approach carrying capacity.
  • What are density dependent factors, and how do they affect population growth?

    Density dependent factors are limiting factors whose effects intensify as population density increases. They include competition, predation, disease, and limited resources, and they regulate population growth by increasing mortality or decreasing birth rates as the population approaches carrying capacity.
  • What is carrying capacity, and how is it related to density dependent factors?

    Carrying capacity is the maximum population size that an environment can sustainably support. Density dependent factors help establish and regulate carrying capacity by increasing their limiting effects as the population nears this maximum.
  • Why are most density independent factors considered abiotic, and what are some examples?

    Most density independent factors are abiotic because they are non-living environmental events that impact populations regardless of density. Examples include hurricanes, droughts, wildfires, and temperature extremes.
  • Describe a scenario in which a density independent factor could drastically reduce a population, regardless of its size.

    A severe wildfire could sweep through an area and kill a large portion of a population, regardless of whether the population was small or large, because the event's impact is unrelated to population density.
  • Explain why understanding limiting factors is important for managing wildlife populations.

    Understanding limiting factors helps in predicting population changes, managing resources, and preventing overpopulation or extinction by recognizing what controls population growth and sustainability.