The enzyme that fixes atmospheric $C O_{2} i n C_{4}$ plants is

PEP carboxylase

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Hexokinase

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RUBP oxygenase

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Hydrogenase

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Solution

The correct option is B PEP carboxylase
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 $C_{4}$ plants. It carboxylates PEP or phosphoenolpyruvate and produces organic acids having four carbon atoms.

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Similar questions

Question 12
The enzyme that is not found in a $C_{3}$ plant is
(a) RuBP carboxylase (b) PEP carboxylase
(c) NADP reductase (d) ATP synthase

^{14} C O_{2}

C O_{2}

C O_{2}

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