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Recap on Photosynthesis

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  • What are needed for photosynthesis to take place?
    Carbon dioxide, water and light
  • In the absence of starch, what is the colour of the iodine solution?
    yellow-brown
  • In the presence of starch, what is the colour of the iodine solution?
    blue-black
  • What is the relationship between the amount of carbon dioxide and the rate of photosynthesis?
    the greater the amount of carbon dioxide, the higher the rate of photosynthesis
  • What are produced from photosynthesis?
    sugar and oxygen
  • What is the primary source of energy on Earth?
    the Sun
  • What is the relationship between the amount of light and the rate of photosynthesis?
    the greater the amount of light, the higher the rate of photosynthesis
  • What test do we use to test for the presence of starch?
    iodine test
  • Photosynthesis happens in the day. This statement is wrong. Why?
    Photosynthesis happens in the presence of light.
  • how is sugar different from starch?
    excess sugar is stored as starch
  • Respiration occurs only in animals. This statement is wrong. Why?
    Plants also respire.
  • What is respiration?
    Respiration is the release of energy from food.
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