Stomata of CAM plants

Stomata of CAM plants open during night and close during day.
CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions that allows a plant to photosynthesize during the day, but only exchange gases at night.
In a plant using full CAM, the stomata in the leaves remain shut during the day to reduce evapotranspiration, but they open at night to collect carbon dioxide (CO₂) and allow it to diffuse into the mesophyll cells. Stomata in CAM plants open during the dark period and close during light period.
Behavior of stomata in CAM plants is part of an adaptive mechanism evolved by plants that grow in hot and dry environments to conserve water.