Gymnosperms · Botany

The 'sulfur shower' observed in pine forests refers to the release of:

  1. Sulfuric acid rain
  2. Yellow spores from fungi
  3. Abundant winged pollen
  4. Resin droplets from the bark
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Correct answer: Abundant winged pollen

Pines produce enormous quantities of yellow, winged pollen grains. During the peak of the pollination season, the wind carries so much pollen that it settles like a yellow dust, resembling sulfur.

Difficulty: Medium Question 31 of 40

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