MCQ
Photochemical smog brings about.
- AFloral bud shedding.
- ✓Bleaching and blazing of foliage.
- CDiscoloration of petals.
- DDefoliation.
✓
Answer
Correct option: B.
Bleaching and blazing of foliage.
Smog is the combination of the fog with the carbon particles of the smoke. The photochemical smog refers to the smog which contains a high concentration of $\text{NO}_\text{x}$ , ozone and other volatile compounds. The photochemical smog contains highly reactive species like $\text{NO}_\text{x}$ and ozone which can produce oxygen radicals on reaction with sunlight. This cause destruction of the chlorophyll pigments, blazing and bleaching of the leaves and other parts of the plants.
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