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Question
Select the wrongly matched pair with regard to C4 cycle.
Options:
A .  Primary CO2 fixation – PGA product
B .  Site of initial carboxylation – mesophyll cells
C .  Primary CO2 acceptor – PEP
D .  C4 plant – Maize
Answer: Option A
:
A
The primary CO2 fixation product in C4 cycle is oxaloacetic acid (OAA) in mesophyll cells. It then forms other 4 – carbon compounds like malic acid or aspartic acid in the mesophyll cells itself, which are transferred to the bundle sheath cells.

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