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Question

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

A
Bundle Sheath
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B
Phloem
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C
Epidermis
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D
Mesophyll
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Solution

The correct option is D Mesophyll
The oxaloacetic acid produced on carbon fixation is reduced to malic acid in mesophyll cells, from where it is transferred to the bundle sheath cells, where it is decarboxylated to form CO2 and pyruvic acid.

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