Does an oak tree give oxygen day and night?

The basic answer is that plants don't release O2 at night. Oxygen is a ... In plants that use CAM photosynthesis, the stomata are closed during the day, so the oxygen can't exit that way. However ... To return to your question, there are no trees or other plants that produce oxygen at night in any appreciable amount. read more

Most plants largely uptake Carbon dioxide (CO{-2})and release oxygen during the day (photosynthesis) and uptake oxygen and release CO{-2} during the night (respiration). Some plants such as been tree can uptake CO{-2} during the night as well because of their ability to perform a type of photosynthesis called Crassulacean Acid Metabolism (CAM). read more