[tingletech]

yes, at night they breath oxygen. Maybe they sleep during the day.

[SamBam]

Plants respire oxygen continually, day and night. It's a myth that they only respire at night.

Like every other organism except for anaerobes (mostly microbes, some fungi) they need oxygen in order to burn fuel for cellular processes. Plant cells are doing things day and night.

The origin of the myth is simply that they produce more oxygen via photosynthesis than they respire, and so are net producers of oxygen during the day.

[wongarsu]

But their cells still consume oxygen during the day, don't they? In sunshine they produce more oxygen than they consume, but the cells are still fundamentally powered by mitochondria oxidizing glucose

[bdamm]

Perhaps different regions of the plant "sleep" at different times? The plant has no need for high response synchronized behavior at all.

[throwawayffffas]

You still consume oxygen when sleeping.

[tingletech]

yes, I meant net.