Environmental facts and photosynthesis

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1. To see if photosynthesis has occured it involves boiling the leaf in alcohol to remove the colour then staining with iodine, blue-black indicates starch (which is how glucose is stored). Which experiment?

  • Testing leaves for starch
  • Using oxygen and carbon dioxide sensors
  • Removing carbon dioxide
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2. Why is temperature a factor which can affect the rate of photosynthesis?

  • It affects the leaves
  • It affects the enzymes
  • It affects the photosynthesis directly

3. To monitor the rate of photosynthesis. Which experiment?

  • Removing carbon dioxide
  • Using oxygen and carbon dioxide sensors
  • Testing leaves for starch

4. With sodium hydroxide sollution, to test the need for carbon dioxide in photosynthesis. Which experiment?

  • Removing carbon dioxide
  • Using oxygen and carbon dioxide sensors
  • Testing leaves for starch

5. What is needed to provide the energy needed to make carbohydrates?

  • Water
  • Light
  • Carbon dioxide
  • Chlorophyll

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