The percentage of light from total solar input utilized by plants:
Correct answer: D. About 1%
- A. 14%
- B. 3 - 5%
- C. 7 - 8%
- D. About 1%
Explanation
Only about 1% of incoming solar energy is converted into stored chemical energy by plants because photosynthetically active radiation is limited and photosynthesis is inefficient. The higher percentages overstate ecosystem photosynthetic efficiency.
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