Assertion: angiosperm's leaf | /r/CapableOf | evolve to have stoma
Facets:
value: on the top surface
type: LOCATION
value: due to their non-submerged state
type: CAUSE
value: in floating aquatic plants
type: LOCATION
Source sentences:
text: In floating aquatic plants, the leaves have evolved to only have stomata on the top surface due to their non-submerged state.