Assertion :The first product of $C O_{2}$ fixation in $C_{3}$ pathway is OAA. Reason: The first product of $C O_{2}$ fixation $C_{4}$ pathway is PGA.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
The first product of $C O_{2}$ fixation $C_{3}$ pathway is 3-phosphoglyceric acid (PGA) which is a 3-carbon compound while the first product of $C O_{2}$ fixation in $C_{4}$ pathway is oxalocetic acid (OAA) which is a 4-carbon compound.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

H e

C_{4}

C_{3}

C_{4}

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