Population Growth & Limiting Factors

What factors can limit population growth?

• Food availability

• Increased birth rates

• Urbanization

• Technological advancements

What happens to a population when it exceeds its carrying capacity?

• Resources become abundant, leading to population growth.

• Resources become scarce, leading to increased competition, starvation, and a decline in population size.

• The population stabilizes and remains constant.

• The population migrates to a new area with more resources.

What type of graph represents exponential growth?

• A straight line graph

• A J curve

• A bell curve

• A U curve

What is the relationship between population density and competition?

• As population density increases, competition for resources intensifies, often leading to a decrease in population growth.

• Higher population density leads to an increase in population growth due to more available resources.

• Population density has no effect on competition for resources.

• Competition decreases as population density increases, allowing for more growth.

What is emigration?

• The movement of individuals into a population, increasing its size.

• The movement of individuals out of a population, which can decrease the population size.

• The process of individuals remaining in their population without any movement.

• The migration of individuals within the same population.

What is natality?

• The rate of population growth due to immigration.

• The birth rate of a population, indicating how many individuals are born in a given time period.

• The average lifespan of individuals in a population.

• The total number of deaths in a population over a specific time period.

What does the S curve represent in population growth?

• Exponential growth, where the population increases indefinitely without limits.

• Logistic growth, where the population grows rapidly at first, then slows as it approaches the carrying capacity.

• Linear growth, where the population increases at a constant rate over time.

• Cyclical growth, where the population fluctuates in a regular pattern over time.

What is logistic growth?

• A model of population growth that occurs when resources are unlimited.

• A model of population growth that occurs when resources are limited, leading to a slowing of growth as the population reaches its carrying capacity.

• A model that describes exponential growth without any constraints.

• A model that predicts a constant population size over time.

How does competition affect population size?

• Competition typically increases the population size as resources become abundant.

• Competition typically has no effect on population size.

• Competition typically decreases the population size as individuals compete for limited resources.

• Competition leads to a stable population size regardless of resource availability.

What is a density-independent factor?

• A factor that affects population growth based on the number of individuals in a population, such as competition for resources.

• A factor that influences population growth regardless of population density, such as natural disasters or climate changes.

• A factor that only affects populations with high density, like disease spread.

• A factor that is dependent on the reproductive rate of a species, such as birth rates.