During the exposure to blue light, all of the following events occur, EXCEPT:
Correct answer: D. Flaccidity of guard cells
- A. Acidification of environment
- B. Turgidity of guard cells
- C. Uptake of K ions of guard cells
- D. Flaccidity of guard cells
Explanation
Answer is "Flaccidity of guard cells"Explanation: Exposure to blue light, which is also effective in photosynthesis has been shown to acidify the environment of the guard cells (i.e. pumps out protons) which enable the guard cells to take up K+followed by water uptake resulting in increased turgidly of guard cells. So in general stoma are open during day and closed at night. This prevents needless loss of water by the plant when it is too dark for photosynthesis.
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