Have you eveer been swimming and water catches on you eyelashes, well what if some oxygen bubble could stick to the leaves and then the leaves could absorb oxygen and then co2 dissolves in water so it might work. im not doing it right now but when i do i will post up here. its going to take some equipment thats for sure.
Goddamn you're dense, there is a reason plants look and grow the way they do in
the environments they do, it is called evolution and natural selection. There are
underwater plants which utilize special chloroplasts which hold their Eukaryotic
Algaes and Corals have zooxanthalae which also evolved for underwater light absorbtion.
The plants which grow on dry land have developed their own method
of light absorbtion which does not include the ability to do this while submerged in
H2O.
Please look up Embryophytes, and/or Land Plants/Terrestrial Plants...........
And don't make me explain them and how they differ from AQUATIC plants.