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  4. In C4 -plants, the decarboxylation of C4 acid to produce C3 acid and C O2 during photosynthesis occurs in-

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Q. In $C_{4}$ -plants, the decarboxylation of $C_{4}$ acid to produce $C_{3}$ acid and $C O_{2}$ during photosynthesis occurs in-

NTA AbhyasNTA Abhyas 2020Photosynthesis in Higher Plants

Solution:

C4-plants show two types of cell involved in the dark reaction process (Kranz anatomy) - mesophylly cells and bundle sheath cells. The light dependent reaction of photosynthesis occurs in mesophyll cells. And the light independent in the bundle sheath. The OAA formed in mesophyll is transferred to bundle sheath which is decarboxylated to release carbon dioxide to be used in dark reaction.