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Question
Carbon refixation in C4 plants occur in chloroplasts of
Carbon refixation in C4 plants occur in chloroplasts of
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Solution
The correct option is C Bundle sheath cells
The carbon dioxide is fixed during dark phase of photosynthesis using reducing and assimilatory power synthesized during light phase. The initial carboxylating enzyme is PEP carboxylase in C4 plants. This enzyme is abundant in leaf mesophyll tissue. It carboxylates PEP or phosphoenolpyruvate and produces organic acids having four carbon atoms. The organic acids are passed on to the leaf bundle sheath cells, where the organic acids are decarboxylated and refixation of carbon dioxide occurs by the RuBisCO enzyme.
The carbon dioxide is fixed during dark phase of photosynthesis using reducing and assimilatory power synthesized during light phase. The initial carboxylating enzyme is PEP carboxylase in C4 plants. This enzyme is abundant in leaf mesophyll tissue. It carboxylates PEP or phosphoenolpyruvate and produces organic acids having four carbon atoms. The organic acids are passed on to the leaf bundle sheath cells, where the organic acids are decarboxylated and refixation of carbon dioxide occurs by the RuBisCO enzyme.
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