Q.

In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in

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By Expert Faculty of Sri Chaitanya

bundle sheath

guard cells

epidermal cells

mesophyll cells

answer is 4.

(Detailed Solution Below)

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Detailed Solution

The C4 acid OAA is formed in the mesophyll cells. It then forms other 4-carbon compounds like malic acid or aspartic acid in the mesophyll cells itself, which are transported to the bundle sheath cells. In the bundle sheath cells these C4 acids are broken down to release CO2 and a 3-carbon molecule.

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