NEET 2007 Biology question

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

(1)Epidermis
(2)MesophyllCorrect
(3)Bundle Sheath
(4)Phloem

Answer: (2)

Solution

In C4 plants (Kranz anatomy), atmospheric CO2 is first fixed in the mesophyll cells by PEP carboxylase, forming oxaloacetic acid (OAA), which is reduced to malic acid (or converted to aspartic acid). Malate then moves to the bundle

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Question ID VK-089779