Question
Stomata of CAM plants
open during the night and close during the day
never open
are always open
open during the day and close at night
Solution
A.
open during the night and close during the day
CAM (Crassulacean Acid Metabolism) plants open stomata only at night (when temperature is low and humidity is high) to cause lesser loss of water (eg, Agave, Opuntia, etc).
