Q.) When do the desert plants take up carbon
dioxide?
(a) During early morning
(b) During day
(c) During night
(d) All the time
Ans: (c) During night
Explanation: Desert plants 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 until the sun comes out and they can carry on with photosynthesis during the day time
