A) I and III
B) I and II
C) II and III
D) III and IV
Correct Answer: C
Solution :
In the light, the pH of guard cells becomes increased due to consumption of carbon dioxide in the process of photosynthesis. Guard cells receive \[{{K}^{+}}\] ions from subsidiary cells. This decreases the water potential of guard cells and leads to migration of water from subsidiary cells to guard cells. Uptake of \[{{K}^{+}}\] ions is also balanced by \[C{{l}^{-}}\] ions.You need to login to perform this action.
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