Question

stomata can also open at night present in a)xerophytes b)gametrophytes c)hydrophytes c)none

Answer 1

Stomata can also open at night present in Succulents. So, the answer is none of the above.

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Answer 2

CAM plants are the plants which open their stomata at night. These plants exhibit a phenomenon known as Crassulacean Acid Metabolism or CAM photosynthesis. These are the plants present in hot and arid climates like desert region. In order to reduce the amount of water loss through transpiration, these plants close their stomata during the day. They open their stomata during night to absorb CO2 for fixation. They release CO2 during the day.