Podcast
Questions and Answers
What is the main focus of demography?
What is the main focus of demography?
- Prediction of population change (correct)
- Population density
- Genetic variability
- Population size
Which factor has the greatest impact on the ability of a population to survive?
Which factor has the greatest impact on the ability of a population to survive?
- Population size (correct)
- Predators
- Competition
- Population density
Which of the following factors can limit population size?
Which of the following factors can limit population size?
- Genetic variability
- Recessive traits
- Density-dependent factors (correct)
- Food availability
What is the relationship between population density and reproduction?
What is the relationship between population density and reproduction?
Why is reduced genetic variability a disadvantage for a population?
Why is reduced genetic variability a disadvantage for a population?
Population size is the number of individuals in a ______
Population size is the number of individuals in a ______
A small population is more likely to become ______
A small population is more likely to become ______
If individuals in a population are too far apart, they may only rarely encounter one another resulting in little ______
If individuals in a population are too far apart, they may only rarely encounter one another resulting in little ______
Population density is the number of individuals in a given ______
Population density is the number of individuals in a given ______
The greater the population, the greater effect these ______ have on population size
The greater the population, the greater effect these ______ have on population size
Flashcards are hidden until you start studying
Study Notes
Population and Demography
- A population consists of all individuals of a species living together in one place at a given time.
- Demography is the statistical study of populations, used to predict population size changes.
Key Features of Populations
- Population Size: the number of individuals in a population, affecting its ability to survive.
- Small populations are more likely to become extinct due to:
- Random events or natural disasters
- Inbreeding, leading to recessive traits and reduced variability
- Difficulty adapting to changes
- Small populations are more likely to become extinct due to:
- Population Density: the number of individuals in a given area, influencing reproduction.
- If individuals are too far apart, they may rarely encounter each other, resulting in little reproduction.
Limiting Factors of Population Size
- Density-Dependent Factors: the greater the population, the greater the effect of these factors.
- Disease
- Competition
- Predators
- Parasites
- Food
- Crowding
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
