The following comments on the 2019 free-response questions for AP® Biology were written by the Chief Reader, Nancy Morvillo, Professor and Chair of Biology, Florida Southern College. They give an overview of each free-response question and of how students performed on the question, including typical student errors.
The APES exam is divided into two sections. Section I is multiple choice and Section II is free response. You will have 90 minutes for the multiple choice section, and 90 minutes for the free response section. The AP Environmental Science multiple choice section is worth 60% of your total exam score, and consists of 55 questions.