|Why is oxygenated water important to plants, and
if it is necessary then, what function does it
perform in the plant?
Plants, like animals, undergo cellular
respiration whereby they metabolize sugars and
release CO2. The metabolic reaction to
break down sugar requires Oxygen. Underground
where roots are growing and respiring is a place
of low oxygen as there's not much of it in gaseous
form (like above ground) and there's no
photosynthesis going on down there. Thus plant
roots can be oxygen limited underground and prefer
Plants respire (burn sugars and oxygen to
produce carbon dioxide and water - just as we
animals do) when they aren't actively
photosynthesizing. If a plant is in darkness (e.g.
at night) and can't get oxygen, it will drown,
just as an animal would.
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