AP Bio Insta-Review Topic 8.3: Population Ecology

Front

What is a population in ecology?

Back

A population is defined as a group of individuals of the same species that live in the same area and interbreed.

Front

What does the variable 'r' represent in population ecology?

Back

The variable 'r' represents the rate of increase of a population, calculated as the difference between the birth rate and the death rate.

Front

What does 'd' stand for in the rate of increase formulas?

Back

In the rate of increase formulas, 'd' stands for deaths per capita.

Front

How can a population increase in size?

Back

A population can increase in size through births and immigration.

Front

If b = 4 and d = 8, what is r?

Back

-4

Front

If r = 0.5 and N = 1000, what is dN/dt?

Back

500

Front

What factors can limit population growth?

Back

Factors that can limit population growth include resource availability, predation, disease, and competition.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

What is the difference between immigration and emigration?

Back

Immigration is the movement of individuals into a population, while emigration is the movement of individuals out of a population.

Front

What is the significance of the logistic growth model?

Back

The logistic growth model describes how populations grow rapidly at first and then slow down as they approach carrying capacity.