Population Dynamics Quiz

What factor directly increases a population's size?

• Births

• Deaths

• Emigration

• Predation

Which factor would directly decrease a population's size?

• Immigration

• Births

• Emigration

• None of the above

What is the term for animals moving into a population?

• Immigration

• Emigration

• Extinction

• Exploitation

Which is a biotic factor that can affect population size?

• Water availability

• Temperature

• Predator presence

• Soil pH

What term describes the maximum population size an environment can sustain?

• Ecological footprint

• Biodiversity

• Carrying capacity

• Ecological succession

How do abiotic factors influence an ecosystem?

• By affecting reproduction rates only

• By determining the types and numbers of organisms that can survive

• By regulating migration patterns only

• They do not influence ecosystems

What would likely happen if a major food source for a herbivore is removed due to climate change?

• Increase in population size

• Decrease in population size

• No change in population size

• Increase in biodiversity

What does emigration mean in ecological terms?

• Individuals leave a population

• Individuals join a population

• Individuals die and reduce the population size

• Birth rate increases within the population

Which of the following is a limiting factor in a densely populated forest?

• Light availability

• Migration

• Immigration

• Fossil fuels

How does immigration affect the genetic diversity of a population?