Test students' understanding of photosynthesis by assessing the mechanisms and key components of the light-dependent reactions (thylakoid events, photophosphorylation, ATP/NADPH production), the Calvin cycle (carbon fixation, reduction, RuBP regeneration, role of RuBisCO; inputs/outputs), and how environmental factors (light intensity and wavelength, CO2 concentration, temperature, water availability) affect photosynthetic rate. Include explaining processes, interpreting simple diagrams or rate-vs-factor graphs, and predicting limiting factors.