University of Arizona
The Biology Project: Photosynthesis Problem Set Light Reaction
Problem set tests understanding of Photosynthesis by providing multiple choice questions accompanied by related tutorials. Problem set 1 focuses on light and role of pigments.
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Southeastern Louisiana University: Photosynthesis
Excellent site outlines various aspects of photosynthesis, including light properties, pigments, and process. Graphics include absorption spectra for pigments and action spectrum of photosynthesis.