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Q.
Refer to the given cross section of a $C_{4}$ leaf and select the incorrect option.
Photosynthesis in Higher Plants
Solution:
The given cross section of the leaf represents Kranz anatomy in a $C_{4}$ plant. $P$ are the chloroplasts of mesophyll cells, which are granal (/.a, thylakoids are stacked to form grana) j and are specialised to perform light reaction of photosynthesis, evolve $O_{2}$ and produce assimilatory power $(ATP + NADPH_{2})$. $Q$ are the chloroplasts of bundle sheath cells which are agranal, i.e., grana are absent and the thylakoids occur as stroma lamellae. In these chloroplasts, final fixation of $CO_{2}$ takes Ptace through Calvin cycle where $CO_{2}$ is fixed by $RuBP$ in the presence of enzyme $RuBisCO$.
