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 (B)</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 (A)</p> Signup and view all the answers

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

<p>Collenchyma cells (A)</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 (C)</p> Signup and view all the answers

Which plant material is the passage most likely describing?

<p>Colchicum (B)</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 (A)</p> Signup and view all the answers

Which of the following is a characteristic of collenchyma cells?

<p>Thin, unlignified walls (A)</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 (B)</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 (D)</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 (B)</p> Signup and view all the answers

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

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

What is the origin of the substance being tested?

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

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