According to the sugar concentration theory, during daytime the guard cells become
A
Turgid.
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B
Flaccid.
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C
Placid.
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D
None of the above.
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Solution
The correct option is B Turgid.
During day time, photosynthesis occur in the guard cells and glucose is produced. Creating an osmotic gradient, resulting in movement of water from adjacent cells into the guard cells making them turgid.