Question:

Match the pigments given in List I with their colour in chromatogram given in List II.
List-I (Pigments)List-II (Colour in chromatogram)
1Chlorophyll 'b'pYellow orange
2CarotenoidsqOrange red
3Chlorophyll 'a'rYellow
4XanthophyllssBlue green
 tYellow green

Choose the correct option from the following :

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Chromatography helps separate plant pigments based on their solubility and interaction with the solvent.

Updated On: Mar 29, 2025
  • 1-s, 2-t, 3-r, 4-q
  • 1-t, 2-p, 3-s, 4-r
  • 1-p, 2-q, 3-r, 4-t
  • 1-t, 2-p, 3-r, 4-s
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The Correct Option is B

Solution and Explanation

Matching photosynthetic pigments with their chromatographic colors:

1. Chlorophyll 'b' - t. Yellow green: This accessory pigment appears yellow-green in chromatography.

2. Carotenoids - p. Yellow orange: These accessory pigments (including β-carotene) show bright yellow-orange hues.

3. Chlorophyll 'a' - s. Blue green: The primary photosynthetic pigment appears blue-green on chromatograms.

4. Xanthophylls - r. Yellow: These oxygenated carotenoids (e.g., lutein) appear distinctly yellow.

The correct matching is: (B) 1-t, 2-p, 3-s, 4-r

Other options are incorrect because: - (A) Mismatches all pigment colors - (B) Incorrectly assigns colors to chlorophylls - (D) Reverses chlorophyll 'a' and xanthophyll colors

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