4 ms·
Release co2, to the air? Wouldn’t we expect them to sequester co2 and release oxygen? Or is my mental model of plants maybe to simplistic?
by filleokus 7y ago
Release co2, to the air? Wouldn’t we expect them to sequester co2 and release oxygen? Or is my mental model of plants maybe to simplistic?
- dna_polymerase 7y agoIt's reversed at night (absence of light).
- puetzk 7y agoIt depends, [CAM succulents](https://en.wikipedia.org/wiki/Crassulacean_acid_metabolism https://en.wikipedia.org/wiki/Crassulacean_acid_metabolism) do their gas exchange at night, and then close their stomata and do the photosynthesis during the day. It's a dry-climate adaptation, to lose less water in the process of exchanging the previous day's O2 for fresh CO2.
- playing_colours 7y agoThey release oxygen during photosynthesis, which requires sunlight. Apart from it, there is respiration process that is going all the time that uses O2 and produces CO2 and energy for functioning. Under the sunlight, the production of O2 is significantly higher then the consumption. The amount of produced CO2 is AFAIR fairy small to introduce any problems for people sleeping in a room.