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Biology: Testing a Leaf for Starch
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Biology: Testing a Leaf for Starch

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Questions and Answers

What is the purpose of boiling the leaf in alcohol in the experimental investigation?

  • To dissolve the chlorophyll (correct)
  • To soften the leaf
  • To enhance the green color of the leaf
  • To extract water from the leaf
  • Why is it important to wash the leaf in warm water after treating it with alcohol?

  • To prevent wilting of the leaf
  • To dissolve the chlorophyll
  • To eliminate any remaining alcohol (correct)
  • To remove excess starch
  • What color does the leaf turn when iodine solution is poured on it as part of the experiment?

  • Yellow
  • Red
  • Blue-black (correct)
  • Green
  • What must be available for photosynthesis to take place according to the text?

    <p>Water and chlorophyll</p> Signup and view all the answers

    What is a key condition necessary for photosynthesis as mentioned in the text?

    <p>Presence of chlorophyll</p> Signup and view all the answers

    Why is it important to hold up the leaf against the light after the iodine treatment?

    <p>To allow for better observation of blue-black parts</p> Signup and view all the answers

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