Pollution Effects · Botany

Which air pollutant is especially known for causing leaf chlorosis and necrotic spots in sensitive plants?

  1. Ozone
  2. Smog
  3. Haze
  4. Nitrogen gas
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Correct answer: Ozone

Ground-level ozone is a phytotoxic air pollutant that damages leaf tissues. It can cause chlorosis, necrotic spots, reduced photosynthesis, and lower crop yield.

Difficulty: Medium Question 3 of 20

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