7.Draw the action spectrum of photosynthesis and the absorption spectrum of chlorophyll on the axes below: % use of absorbed light 100 54 50 55 chloro chlorophyll phyll a 400 b action spectrum absorption spectrum 500 600 wavelength of light (nm) 700 800 100 59 % absorption of light 25 8.Make a note on the above diagram (Q=7) to explain why most leaves look green.

7. Start with a photon of sunlight and a carbon atom in a molecule of carbon dioxide in the atmosphere: model/diagram their pathway from that starting point to their final destination as a molecule of glucose that is used for energy in the cells of the plant stem. Following your diagram/model, provide a written explanation for what your diagram/model depicts. Make sure both your model and explanation are clear, concise, and have the appropriate level of detail to clearly demonstrate you understand photosynthesis, cellular respiration, and the movement of mass and energy in plants.

Part A - Multiple Choice /15) 1. How does Chlorophyll obtain its energy? a. from CO2 and water? 6 absorbed from solar energy # 3 c. converted from chemical energy into ATP d. glucose broken down through a series of reactions 2. What process occurs during the light-independent reactions of photosynthesis? a. Oxygen is released into the atmosphere b. Protons are pumped from the thylakoid space into the stroma c. RuBP is carboxylated then regenerated in the Calvin cycle d. Triose phosphate is converted into G3P 3. Which statement is true about energy? E a. energy can only be obtained from solar sources b. energy can be obtained from chemical sources c. energy can be created from anything (d) energy can be converted from solar and chemical sources 4. Under which condition is anaerobic respiration most likely to occur? a bacteria in soil helping to compost b. yeast causing bread dough to rise c. bacteria present on a rusty nail d. all the above 5. What is true of chemosynthesis? a. It is…

Magaia et al. illustrated in Figure 2 the relationship of photosynthetic of temperature rate and respiration rate of C3 plants as a function (2015). Which process hampers the carbohydrate synthesis when the temperature exceeds 30°C? respiration photosynthesis 0 10 40 50 20 30 temperature C Figure 2. Relationship of photosynthetic rate and respiration rate in response to temperature. Ⓒ Magaia et al., 2015 O a. Light-dependent reaction O b. Light-independent reaction O c. Photorespiration O d. Photolysis of water rate