land plants have their stomata mainly on the lower side to reduce water loss but if on both sides then upper side has very few.
Water plants have stomata on upper side to enhance water loss.
In dry areas, plants have leaves with sunken stomata to reduce water loss by transpiration
Plants in wet areas have stomata equally distributed on both sides.
Mohaissack answered the question on October 5, 2017 at 11:51
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