List-I (Pigments) | List-II (Colour in chromatogram) | ||
1 | Chlorophyll 'b' | p | Yellow orange |
2 | Carotenoids | q | Orange red |
3 | Chlorophyll 'a' | r | Yellow |
4 | Xanthophylls | s | Blue green |
t | Yellow green |
Chromatography helps separate plant pigments based on their solubility and interaction with the solvent.
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