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Pre-lab Homework: Photosynthesis and Plant Physiology



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FOHS Photosynthesis and Plant Physiology Name Pre lab Homework Photosynthesis and Plant Physiology Read the lab carefully and complete the questions below before coming to lab 1 This week s lab covers photosynthesis and basic plant physiology Read the lab find the summary equation for photosynthesis and write it below Photosynthesis summary equation 2 During the first part of the lab you will be testing for starch in plant leaves Why are we testing for starch 3 In our first experiment we have placed black paper on some of the leaves Why would we put on paper that we think blocks all of the light 4 In the second experiment we are separating pigments by paper chromatography Other than chlorophyll what pigments might we find in the spinach leaves 5 In the third experiment we are examining gas exchange in plant leaves What differences do you predict you ll see between the plant kept in the light versus the plant kept in the dark 1 FOHS Photosynthesis and Plant Physiology Name Photosynthesis and Plant Physiology GOALS After successfully completing this lab a student will be able to List some of the factors that affect photosynthetic rate Explain the connection between light and energy storage in plants Examine gas exchange in plant leaves Use the scientific method to investigate biological processes Calculate the Student s t test to compare two data sets OVERVIEW During this lab you will perform experiments to help you understand two of the basic processes that convert energy from one form to another in biological systems Your investigations will begin with experiments on photosynthesis Photosynthesis is the process that plants use to convert the energy of light into the stored chemical energy of sugars Photosynthesis can be summarized with an equation that looks like this 6CO2 6H2O C6H12O6 6O2 Light Looking at this summary equation you can probably guess that many factors affect the rate of photosynthesis As with any reaction changing the concentration of the reactants



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