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Questions and Answers
An ideal habitat with unlimited resources is associated with
An ideal habitat with unlimited resources is associated with
- Neither exponential growth nor logistic growth
- Population crashes
- Logistic growth
- Both exponential growth and logistic growth
- Exponential growth (correct)
The maximum population a habitat can support is its
The maximum population a habitat can support is its
- Death rate
- Carrying capacity (correct)
- Exponential growth
- Logistic growth
- Birth rate
Logistic growth involves
Logistic growth involves
- Population growth reaching carrying capacity and then speeding up
- Population growth slowing down as the population approaches carrying capacity (correct)
- A population crash
- Population size decreasing to zero
- Population growth continuing forever
In exponential growth
In exponential growth
Which of the following would NOT cause population size to decrease?
Which of the following would NOT cause population size to decrease?
To figure out the human population density of your community, you would need to know the number of people living there and __________.
To figure out the human population density of your community, you would need to know the number of people living there and __________.
An example of population density is __________.
An example of population density is __________.
Chimpanzees have a relatively low birth rate. They take good care of their young, and most chimps live a long life. The chimp survivorship curve would look like __________.
Chimpanzees have a relatively low birth rate. They take good care of their young, and most chimps live a long life. The chimp survivorship curve would look like __________.
A population is defined as __________.
A population is defined as __________.
A set of traits that affects an organism's schedule of reproduction and survival is called its _____.
A set of traits that affects an organism's schedule of reproduction and survival is called its _____.
A population will always grow exponentially __________.
A population will always grow exponentially __________.
When birth rate equals death rate, __________.
When birth rate equals death rate, __________.
A population of mice has grown so rapidly that there are 2,400 individuals in an ecosystem that will support about 1,800 mice. The mouse population is most likely to __________.
A population of mice has grown so rapidly that there are 2,400 individuals in an ecosystem that will support about 1,800 mice. The mouse population is most likely to __________.
A newly mated queen ant establishes a nest in an unoccupied patch of suitable habitat. Assuming that no disasters strike the nest, which type of equation is likely to best describe its population growth?
A newly mated queen ant establishes a nest in an unoccupied patch of suitable habitat. Assuming that no disasters strike the nest, which type of equation is likely to best describe its population growth?
No population can grow indefinitely. The ultimate size of any population is limited by __________.
No population can grow indefinitely. The ultimate size of any population is limited by __________.
Which one of the following would most likely be an example of an abiotic factor that limits population growth?
Which one of the following would most likely be an example of an abiotic factor that limits population growth?
Human population growth __________.
Human population growth __________.
The single greatest current cause of population decline is __________.
The single greatest current cause of population decline is __________.
A non-native species that has spread far beyond the original point of introduction and causes environmental or economic damage is called a(n) _____.
A non-native species that has spread far beyond the original point of introduction and causes environmental or economic damage is called a(n) _____.
Which of the following is a definition of the ecological footprint?
Which of the following is a definition of the ecological footprint?
Study Notes
Population Growth Models
- Exponential growth occurs in ideal habitats with unlimited resources.
- Logistic growth describes population growth slowing as it approaches carrying capacity.
Key Definitions
- Carrying Capacity: The maximum population an environment can sustain.
- Population Density: The number of individuals per unit area, exemplified by organisms in a given space.
Population Dynamics
- Increased birth rates can prevent population size decline.
- The relationship between birth rate and death rate determines population stability.
Growth Patterns
- In exponential growth, population size accelerates as resources are abundant.
- The survivorship curve for chimpanzees shows a gradual decline towards the end of their lifespan.
Population Characteristics
- A population consists of individuals of one species within a specific area.
- Life history traits determine an organism's reproductive schedule and survival chances.
Influencing Factors on Population Growth
- A population is most likely to grow exponentially if it faces no limiting factors.
- The carrying capacity limits the maximum sustainable size of a population.
Environmental Impact
- Abiotic factors, such as temperature extremes, can limit population growth.
- Habitat destruction is the leading cause of current population declines.
Invasive Species
- An invasive species causes ecosystem damage due to its spread beyond the initial introduction area.
Ecological Footprint
- This measure estimates the land required to support individual or population consumption of resources.
Studying That Suits You
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Description
Test your knowledge of key concepts in Chapter 19 of Mastering Biology with these flashcards. This chapter focuses on population dynamics, including exponential growth and carrying capacity. Perfect for preparing for exams and reinforcing your understanding of the material.
