Stomata of CAM plants (a) Open during the night and close during the day (b) Never open
Stomata of CAM plants
(a) Open during the night and close during the day
(b) Never open
(c) Are always open
(d) Open during the day and close at night
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Correct option (a) Open during the night and close during the day
Explanation :
CAM (Crassulacean Acid Metabolism) plants open stomata only at night (when temperature is low and humidity is high) to cause lesser loss of water (e.g. Agave, Opuntia, etc.). So, CAM photosynthesis is a carbon fixation pathway that evolved in some plants as an adaptation to add condition.
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