FlinnPREP™ Inquiry Labs for AP® Biology: Photosynthesis in Leaf Disks

Product Details

Big Idea 2, Investigation 5, Science Practices 1, 2, 3, 6, 7

Ecosystems and the Earth’s atmosphere depend on photosynthesis for fuel and oxygen. The rate of photosynthesis can be measured by the production of oxygen or the consumption of carbon dioxide. Examine the factors that affect photosynthesis in land plants by using the most practical method for a school laboratory—the floating leaf disk technique.

In this Inquiry Lab Kit, students begin with a Baseline Activity to determine the rate of photosynthesis using disks of leaf tissue that are vacuum-infiltrated to replace intercellular air with liquid. Their observations provide the basis for the Opportunities for Inquiry section of the lab. Questions like, “Do all leaf types photosynthesize at the same rate?” and “How might biotic and abiotic factors in the environment, such as light, pH and temperature, affect the rate of photosynthesis?” help guide and inspire students to develop a testable hypothesis and then design an experiment that they can plan, discuss, evaluate, execute and finally justify to their peers.

Includes detailed teacher notes, reproducible student handouts and enough materials for eight groups of students to complete the Baseline Activity and to prepare for the inquiry activity. A 0.01-g precision balance, strong light sources, support stands and timers are required and available separately. Ivy or fresh spinach and  are also required. A refill kit for the Photosynthesis in Leaf Disks Inquiry Lab Kit is also available (FB2087).