AP®︎ Biology: Topic 8.4 Practice Test
Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 8.4 of AP Biology – Effect of Density on Populations.
Questions List
Topic 8.4
Question 1 Easy
This question tests the following: SYI-1.H
What does population density refer to?
What You’re Being Tested On:
Explore the learning objectives taken directly from the College Board’s AP® Biology Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Topic 8.4: Effect of Density on Populations
Learning Objective: 8.4.A
Explain how the density of a population affects and is determined by resource availability in the environment.
Essential Knowledge: 8.4.A.1
Carrying capacity is the sustainable abundance of a species that can be supported by the ecosystem’s total available resources.
Essential Knowledge: 8.4.A.2
As limits to growth attributable to density-dependent and density-independent factors are imposed, a logistic growth model typically ensues. Relevant Equation: Logistic Growth— dN/dt = r_max N (1 − N/K) where dt = change in time N = population size dN = change in population size r_max = maximum per capita growth rate of population K = carrying capacity