In article , Franz Heymann
writes
I thought that such Oxygen as a plant needs is absorbed as the Ogygen
in Carbon Dioxide through the stomata or as components of molecules or
ions which the plant takes in through the roots. I am probably just
being ignorant, but I have never heard of Oxygen being absorbed
through the roots as gaseous molecules of Ogygen..
I do know that many plants abhor waterlogged conditions, but I did not
think that that was connected with the uptake of gaseous Oxygen
molecules through the roots.

Oxygen is not absorbed into plant roots as a gas, it converts into an
oxide mineral first, but that cannot happen in waterlogged or over-
compacted soil. That is why lawns need aeration from time to time.
--
Alan & Joan Gould - North Lincs.