Biology - Hydrophytic Plants
Elodea: like most pond weeds, its leaves have no stomata
_Hydrophytic_ plants (water lovers), by contrast, have an abundant supply
* leaves and cuticle are thin
* large intercellular air spaces give buoyancy and are reservoirs for
* submerged leaves do not have stomata
* floating leaves have stomata on the upper surface
For example, water lily plants, other pond weeds, etc.
As water can be absorbed over the whole surface, xylem  vessels are
reduced or absent.
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