In the C_3 pathway,the first stable product i | vedclass

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(B) In the $C_3$ cycle (Calvin cycle),the primary carboxylation reaction involves the fixation of $CO_2$ by $RuBP$ to form two molecules of $3$-phosph

Vedclass · Accepted Answer

$PGA, OAA$

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(B) In the $C_3$ cycle (Calvin cycle),the primary carboxylation reaction involves the fixation of $CO_2$ by $RuBP$ to form two molecules of $3$-phosphoglyceric acid $(PGA)$,which is the first stable product $(P = PGA)$.In the $C_4$ cycle (Hatch-Slack pathway),the primary carboxylation occurs in the mesophyll cells where $PEP$ combines with $CO_2$ to form oxaloacetic acid $(OAA)$,which is a $4$-carbon compound and the first stable product $(Q = OAA)$.

In the $C_3$ pathway,the first stable product is $P$,and in the $C_4$ pathway,the first stable product is $Q$. Choose the correct option for $P$ and $Q$.

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