Purity Test with Millon's Reagent
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Questions and Answers

What type of reserve food material is typically found in Strophanthus seeds?

  • Vitamins
  • Carbohydrates (correct)
  • Lipids
  • Proteins
  • Which of the following plant parts is typically stalked at the apex of the seed?

  • Cotyledon
  • Awn (correct)
  • Radicle
  • Endosperm
  • Which of these seeds is known to contain colchicine, a compound used in medicine?

  • Mustard seeds
  • Colchicum seeds (correct)
  • Psyllium seeds
  • Stramonium seeds
  • Which type of seed is often used as a laxative or bulk-forming agent?

    <p>Psyllium seeds</p> Signup and view all the answers

    Which of these seeds is known for its pungent, spicy flavor and is used as a condiment?

    <p>Mustard seeds</p> Signup and view all the answers

    What type of cell is described in the passage as having rounded, thickened walls?

    <p>Collenchyma cells</p> Signup and view all the answers

    Which of the following best describes the sclerenchyma layer mentioned in the passage?

    <p>Narrow, longitudinal, elongated cells with pitted, lignified walls</p> Signup and view all the answers

    Which plant material is the passage most likely describing?

    <p>Colchicum</p> Signup and view all the answers

    What is the purpose of the iodine staining mentioned in the passage?

    <p>To detect the presence of starch</p> Signup and view all the answers

    Which of the following is a characteristic of collenchyma cells?

    <p>Thin, unlignified walls</p> Signup and view all the answers

    What is the purpose of the test described in the text?

    <p>To test for the purity of stramonium</p> Signup and view all the answers

    What is the key indicator that the test is negative for the presence of white mustard?

    <p>No color change occurs</p> Signup and view all the answers

    What is the purpose of the Millon's reagent (mercury nitrate T.S.) in this test?

    <p>To react with stramonium alkaloids</p> Signup and view all the answers

    What is the duration of the maceration step in the test procedure?

    <p>15 minutes</p> Signup and view all the answers

    What is the origin of the substance being tested?

    <p>The dried ripe seeds of Datura stramonium</p> Signup and view all the answers

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