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
Correct Answer: A
Solution :
[A] 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.). |
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