Considering that leaf stomata have the conflicting functions of allowing gaseous carbon dioxide into the leaf, yet preserving the plant's supply of water, which of the following is NOT reasonable?
( ) Tree leaves that orient flat and present the top side to the sun would have most of their stomata on the bottom of the leaf
( ) A submerged-water plant would have no stomata
( ) Corn, oats, rice, and wheat (all monocots) have relatively upright blades with sunlight hitting both sides and would have stomata distributed fairly evenly on both sides
( ) Leaves of plants in dry areas will have more stomata than leaves of plants in humid areas
( ) Plants in arid environments open their stomata at night when temperatures are cooler and evaporation occurs less