In C-4 plants, why is C-3 pathway operated in bundle sheath cells only?
In C-4 plants, why is C-3 pathway operated in bundle sheath cells only?
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1. Decarboxylation of malic acid occurs in bundle sheath cells of C4 plants. Due to which concentration of CO2 increases in bundle sheath cells.
2. The enzymes required for Calvin cycle i.e. RuBisCO is present in bundle sheath cells.
3. In presence of high concentration of CO2 , RuBisCO acts as carboxylase and bring about carboxylation of RuBP.
4. Hence, in C-4 plants, C-3 pathway is operated in bundle sheath cells only.
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