A Plant’s Raw Materials

Name: _______________________________________________________ Period: ________ A Plant’s Raw Materials Experiment: A plant was placed in an apparatus in which the amount of water, the amount of light, and the amount of carbon dioxide can be changed to see how many oxygen bubbles are produced. Three different experiments were conducted, changing one of these factors (water, light, carbon dioxide) each time. 1. What is the relationship between water, light, and CO2 and photosynthesis? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 2. What is the relationship between oxygen and photosynthesis? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 3. What would a low number of oxygen bubbles indicate about photosynthesis? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 4. Plot the data on the graph you have been assigned. ALL GRAPHS NEED TO BE DONE AND APPROVED BEFORE MOVING ON TO GROUP CONCLUSION QUESTIONS. Group Conclusion Questions: 1. Fill out the data table below with the range of each factor that will produce the optimal number of oxygen bubbles. Factor Range to produce optimal number of bubbles Water Light CO2 Temperature 2. What trend do you see in the ranges to produce optimal number of bubbles for all 4 factors? ___________________________________________________________________________________________ ___________________________________________________________________________________________ STOP: Get initials from teacher _______________________ and move on to Data Set 3. 3. Using Data Set 3, fill out the data table below with the range of each factor that will produce the optimal amount of sugar. Factor Range to produce the optimal amount of sugar Water Light CO2 Temperature 4. What trend do you see in the ranges to produce optimal amount of sugar for all 4 factors? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 5. Comparing your answers from #2 and #4, is oxygen a reliable predictor of photosynthetic activity? Use data to support your answer. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 6. Based on the data your group looked at, explain the reactants and products of photosynthesis. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 7. If a plant can use light energy to make materials, why does it need sugar? ___________________________________________________________________________________________ ___________________________________________________________________________________________ 8. Think back to the elephant and lion digestion lab. How will the plant transform this sugar into a needed substance such as protein? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________