A) xerophytes
B) gametophytes
C) mesophytes
D) hydrophytes
Correct Answer: A
Solution :
In some succulants (xerophytes) stomata open during night and close during day time. Such stomaia are known as scotoactive stomata. This is a mechanism to reduce water loss due to transpiration. These are found in plants like Opuntia, Bryophyllum etc.
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