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| Q. |
Interveinal necrotic spots on leaves appear due to – |
| A. | HF injuly |
| B. | SO2 injury |
| C. | NO2 injury |
| D. | O3 injury |
| Answer» B. SO2 injury | |
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Explanation: Injury caused by sulphur oxides show interveinal necrotic areas that are light tan to white. Uninjured tissue new to the veins remains green. |
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