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STARCH TEST AIM: To determine whether leaves contain starch. INTRODUCTION: plants feed by photosynthesis. They use carbon dioxide from the air and water from the soil to make carbohydrates. This process requires an energy input which comes from the sunlight and is absorbed by the green pigment chlorophyll present in the chloroplasts. The carbohydrates formed as a product of photosynthesis can be made into other substances such as proteins by adding nitrate ions and it can also form chlorophyll by adding magnesium ions. Photosynthesis occurs inside the mesophyll cells, especially the palisade cells and also the guard cells of the leaves. Leaves consist of chloroplasts which consist of chlorophyll which captures light energy. Photosynthesis occurs inside the chloroplasts. The word and molecular equation of photosynthesis is: CO2 + 6H20 = C6H12O6 + 602 (carbon dioxide) (water) (sun) (sugar) (oxygen) The sugar is the main form of energy made by the plant and is for...

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