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  4. In the leaves of C4 -plants, malic acid formation during CO2 fixation occurs in the cells of

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Q. In the leaves of $ {{C}_{4}} $ -plants, malic acid formation during $ C{{O}_{2}} $ fixation occurs in the cells of

Rajasthan PMTRajasthan PMT 2010

Solution:

The oxalic acid is reduced to malic acid in mesophyll cells, from chloroplast of mesophyll cells. The malic acid is transferred to the chloroplast of bundle sheath cells where it is decarboxylated to form $ C{{O}_{2}} $ and pyruvic acid.