Stomata cover only ______________ of leaf surface?
Correct answer: C. 1-2 %
- A. 0.03 - 0.04%
- B. 10%
- C. 1-2 %
- D. 50%
Explanation
Stomata occupy only a small fraction of the leaf surface, commonly estimated at about 1 to 2%, while still providing extensive openings for gas exchange. The likely distractor is 10%, which overestimates their area because stomata are numerous but individually very small.
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