Is stomata are closed in night then how they respire at night

Cellular respiration,they take in oxygen at night and respire, Not all plants have their stomata closed during the night. A notable exception are Crassulacean acid metabolism(CAM) plants that keep their stomata closed during the day and open it during the night. . when stomata is closed, oxygen respiration is restricted, not blocked entirely
hope this helps i tried my best to remember