NEET Biology question

In C4-plants, the final assimilatory carbon dioxide fixation via the Calvin cycle (RuBisCO) occurs in

(A)Guard cells
(B)Spongy cells
(C)Palisade cells
(D)Bundle sheath cellsCorrect

Answer: (D)

Solution

C4 plants show Kranz anatomy with two distinct carboxylation steps. Initial fixation of atmospheric CO2 (via PEP carboxylase, forming OAA) occurs in the undifferentiated mesophyll cells; the C4 acid

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Question ID VK-128212