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B
Mesophyll cell, during day time
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C
Mesophyll cell, during night
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D
Bundle sheath cell, during day time
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Solution
The correct option is A Bundle sheath cell, during night In CAM plants, photophosphorylation occurs in bundle sheath cell during night. Hence, stomata is open during night in order to fix the carbon dioxide. During night, a four carbon acid is produced when stomata are open. RuBisCo enzyme fixes carbon during the day time during the light reactions. Examples of plants that show CAM photosynthesis are cactus and pineapple.
Thus, the correct answer is 'Bundle sheath cell, during night.'