Question

When do xeric plants take up CO2 and perform photosynthesis ? when do zyrik plants take up seo2 and perform photosynthesis

Answer 1

The desert plant take up co2 to perform photosynthesis as every plant need energy to live

Answer 2

Such plants undergo CAM photosynthesis as they open up their stomata during night and take in CO2.Stomata remains close during the day time to prevent the loss of water  by transpiration. They store the CO2 in their cells until the sun comes out and they can carry on with photosynthesis during the day time.