Population Ecology

What is population growth?

• The movement of individuals from one population to another.

• Decrease in the number of individuals in a population over time.

• Increase in the number of individuals in a population over time.

• The average age of individuals in a population.

What are the factors that affect population growth?

• birth rate, death rate, immigration, and emigration

• food availability, disease prevalence, natural disasters

• government policies, economic conditions, education level

• climate change, technological advancements, social factors

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is the formula for exponential population growth?

• N(t) = N0 * e^(r * t)

• N(t) = N0 * (1 + r)^t

• N(t) = N0 * (1 - r)^t

• N(t) = N0 * (r * t)

If a population starts with 100 individuals and has a growth rate of 0.05 per year, how many individuals will there be after 5 years?

• 120

• 128

• 110

• 105

What is carrying capacity?

• Maximum number of individuals an environment can support

• The number of individuals that have migrated from one environment to another.

• The average number of individuals an environment can support.

• The minimum number of individuals an environment can support.

Tags

NGSS.MS-LS2-4

What are the factors that determine carrying capacity?

• availability of resources, population size, competition, predation, disease, and environmental conditions

• availability of resources, population size, competition, predation, disease, and climate change.

• availability of resources, population size, competition, predation, disease, and genetic variation.

• availability of resources, population size, competition, predation, disease, and migration.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is logistic population growth?

• A type of population growth that considers the carrying capacity of the environment and levels off as the population reaches its maximum sustainable size.

• A type of population growth that is only observed in plants and not in animals.

• A type of population growth that decreases over time due to limited resources.

• A type of population growth that continues to increase exponentially without any limits.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is the formula for logistic population growth?

• dN/dt = rN(1 + K/N)

• dN/dt = rN(1 + N/K)

• dN/dt = rN(1 - N/K)

• dN/dt = rN(1 - K/N)

Tags

NGSS.HS-LS2-1

If a population has a carrying capacity of 500 and a growth rate of 0.1, how many individuals will there be when the population reaches carrying capacity?

• 500

• 100

• 250

• 750

What are population dynamics?

• The study of how populations of organisms evolve over time.

• The study of how populations of organisms change over time.

• The study of how populations of organisms are distributed in space.

• The study of how individuals within a population interact with each other.

Tags

NGSS.MS-LS2-4