In which of the following does carbon fixation occur in mesophyll cells before being used in Calvin cycle in bundle sheaths cells?Group of answer choicesC3 photosynthesisC4 photosynthesisCAM photosynthesisNext
Question
In which of the following does carbon fixation occur in mesophyll cells before being used in Calvin cycle in bundle sheaths cells?Group of answer choicesC3 photosynthesisC4 photosynthesisCAM photosynthesisNext
Solution
The process where carbon fixation occurs in mesophyll cells before being used in the Calvin cycle in bundle sheath cells is C4 photosynthesis.
Here's a step-by-step explanation:
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In C4 photosynthesis, the carbon dioxide fixation happens twice.
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The first fixation occurs in the mesophyll cells, where carbon dioxide combines with phosphoenolpyruvate (PEP) to form a four-carbon compound, oxaloacetate. This is why it's called C4 photosynthesis.
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This four-carbon compound then moves to the bundle sheath cells, where it releases carbon dioxide.
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The released carbon dioxide is then used in the Calvin cycle for the synthesis of glucose.
So, the correct answer is C4 photosynthesis.
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