AP Biology · Free-response, form B 2011

4 questions, each with its course unit and the official scoring guidelines.

Official paper (PDF) · QuestionsAll AP Bio papers→

Question 2

Open answer
Question 2 — 2. Ecological succession describes the pattern of changes in communities over time. The graph below shows changes in plant diversity following the abandonment of an agricultural field in a temperate biome. (a) Discuss…

Source: College Board — AP Biology, Free-response, form B, 2011

Question 3

Open answer
Question 3 — 3. Invasive species, such as red fire ants, introduced into an ecosystem often threaten native plants and animals. (a) Describe THREE different factors that contribute to the success of invasive species in an ecosystem.…

Source: College Board — AP Biology, Free-response, form B, 2011

Question 4

Open answer
Question 4 — 4. Phylogeny reflects the evolutionary history of organisms. (a) Discuss TWO mechanisms of speciation that lead to the development of separate species from a common ancestor. (b) Explain THREE methods that have been…

Source: College Board — AP Biology, Free-response, form B, 2011

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