College Board
2015 AP® Biology Free-Response Questions
Many future doctors earn college science credit by passing the AP biology test while still in high school. Help young scientists prepare for the exam by studying past test questions. Each of the eight questions covers multiple topics...
Virginia Department of Education
A-Mazing Plants
Have your young scientists questioned why plants grow a particular way? Through this learning opportunity, scientists gain firsthand knowledge about how plants develop and various factors that affect rates of growth as they bring plants...
G. Turrell
Science Activity 1: Light & Sound
Are you looking for lab sheets to go with your class experiment on plant response to light? You are no longer in the dark! This is a lesson that was written for a unit on light, but could easily be used to demonstrate plant behaviors in...
Curated OER
Tropism
Students conduct various experiments on tropism. In this biology lesson, students explain how gravity affects the growth of plant roots. They identify the different types of tropisms.
Curated OER
The Importance of Tropisms
Students investigate plant tropisms using the scientific method. In this life science lesson, students learn about tropisms and test the response of corn seedlings to gravity. Response questions, extensions, and an adaptation for older...
Curated OER
Plants In Space
In this biology activity, students grow corn plants in growth pouches as the control group in an experiment on plant growth in microgravity. Then they analyze any differences that occur between Earth-grown and space-grown corn plants.
Curated OER
Plant Responses
In this plant response worksheet, students will explore the different responses plants have to different stimuli, including light and gravity. Students will complete 7 multiple choice questions and 3 fill in the blank questions.
Curated OER
Science: A-maze-ing Plants
Students discover how light helps plants to grow. By placing a plant inside a box cut into a maze, they observe how the plant finds its way through the maze to the light source.
Science Buddies
Science Buddies: Project Ideas: Plants on the Move: Phototropism
A plant biology science fair project exploring how various levels of light affect plant growth. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...
University of Hamburg
University of Hamburg: Phototropism
A high level discussion of the phototropic effect in plants. Discusses the basics, but quickly branches into a very high level discussion.
University of Hamburg
University of Hamburg: Photoperiodism and Stimulation
A good summary of the photoperiodic effects of plants. Discussion of the way that the length of the day effects the growth of plants.
McGraw Hill
Mhhe: Plant Growth and Growth Regulators
A very good overview of the hormonal control of plant responses to different environmental cues. Good place to start research.
Ohio State University
Ohio State University: Plant Signals & Sensors
A concise review of how plants sense environmental conditions and respond to stimuli. Good illustrations and a quiz enhance learning along with links to additional information.
TED Talks
Ted: Ted Ed: How Plants Tell Time
Morning glories unfurl their petals like clockwork in the early morning. A closing white waterlily signals that it's late afternoon. And moon flowers, as their name suggests, only bloom under the night sky. What gives plants this innate...
CK-12 Foundation
Ck 12: Biology: Plant Responses
[Free Registration/Login may be required to access all resource tools.] Describes ways that plants respond to environmental stimuli.
CK-12 Foundation
Ck 12: Life Science: Tropisms
[Free Registration/Login may be required to access all resource tools.] Plants may not be able to move, but they are able to change how they grow in response to their environment. Growth toward or away from a stimulus is known as a...
NC State University
North Carolina State University: Plant Experiments on Line
Experiments provide information related to the importance of light and gravity on plant growth and development.
CK-12 Foundation
Ck 12: Life Science: 7.13 Tropisms
Learn how plants respond to different environmental stimuli.
Hunkins Experiments
Hunkin's Experiments: Potato Maze
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one is a...