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In C4 plants, the Calvin cycle operates in the
Your answer:
Correct answer: (d)
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Explanation
Why (d) is correct
In C4 plants, CO2 released in the bundle sheath cells enters the Calvin cycle there. The Calvin cycle runs in the stroma of the bundle sheath chloroplasts, where RuBisCO is.
Why the other options are wrong
- (a) · your answer The Calvin cycle runs in the stroma, not the grana.
- (b) · your answer Mesophyll cells of C4 plants lack RuBisCO, and the grana are not the site of the Calvin cycle.
- (c) · your answer Mesophyll cells lack RuBisCO, so the Calvin cycle cannot run there.
NCERT point: The Calvin cycle is common to C3 and C4 plants; in C4 plants it is limited to the bundle sheath.
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