Study

L3 Key Terms and Ideas

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  • What is an invasive species?
    Species introduced by humans to a new area
    Species only in one place
    Species with zero growth
    Species with small populations
  • What are r-strategists?
    Species with rapid growth and high death rates
    Species at carrying capacity
    Species with zero growth
    Species with slow growth and low death rates
  • What is exponential growth?
    Population that decreases steadily
    Population that remains at zero
    Population that stays constant
    Population growth that increases faster as size increases
  • What is habitat loss?
    Building habitat corridors
    Random changes in ecosystems
    Creation of reserves
    Destruction of natural habitats by humans
  • What does high biodiversity provide?
    A smaller chance of survival
    Only more plants
    A more balanced and resilient ecosystem
    A decline in population size
  • What is eutrophication?
    Lack of nutrients in soil
    Exponential growth of animals
    Excess nutrients causing algae growth
    Migration of fish
  • What are K-strategists?
    Species with rapid reproduction
    Species with few offspring and logistic growth
    Species with short lifespans and no care
    Species with random distribution
  • What is zero population growth?
    Population decreasing steadily
    Population at carrying capacity
    Population growing rapidly
    Population neither increasing nor decreasing
  • What is logistic growth?
    Population growth that never slows down
    Population growth without limits
    Population growth that always decreases
    Population growth that levels off near carrying capacity
  • What does growth rate measure?
    The size of an individual
    The number of ecosystems in an area
    How fast a population changes in size
    The biodiversity of a region
  • What is habitat fragmentation?
    Destroying all plants in an area
    Adding more water to an ecosystem
    Creating one large habitat
    Breaking an ecosystem into small pieces
  • What is conservation biology?
    Study of human demographics
    Study and practice of protecting biodiversity
    Study of climate change
    Study of extinct species
  • What is population dynamics?
    The study of populations and how they change
    The study of genetics
    The study of extinction
    The study of biodiversity
  • What are the two types of limiting factors?
    Natural and human
    Density-dependent and density-independent
    Controlled and uncontrolled
    Abiotic and biotic
  • What is carrying capacity (K)?
    The total biodiversity of an area
    The average number of organisms in an area
    The maximum population size an ecosystem can support
    The smallest possible population size
  • What is biodiversity?
    Only plant species
    Similarity among organisms
    Variation in living things
    Only the number of animals
  • What is a survivorship curve?
    Graph showing individuals alive at each age
    Graph of population density
    Graph of climate change
    Graph of food chains
  • What is a biodiversity hotspot?
    A zoo with many species
    Area with no living things
    Location with many endemic species
    A region with only plants
  • What are demographics?
    Information about human populations
    Data on plants only
    Information about extinct species
    Data on biodiversity
  • What is biomass?
    The number of animals only
    The food chain energy
    The average plant size
    All the matter in a biological population
  • What is demographic transition?
    When populations double in size
    When populations reach zero growth
    When developed countries have fewer children
    When birth and death rates are equal
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