A) bundle sheath cells of \[{{C}_{3}}\]plants
B) mesophyll cells of \[{{C}_{4}}\]plants
C) bundle sheath cells of \[{{C}_{4}}\] plants
D) mesophyll cells of all plants
Correct Answer: C
Solution :
The \[{{C}_{4}}\] plants plants have dimorphic chloroplasts granal and agranal. Chloroplasts in mesophyll cells are granal, i.e., they contain thylakoids that are stacked to form grana, as in \[{{C}_{3}}\]plants. Chloroplasts of bundle-sheath cells are agranal, i.e., grana are absent and the thylakoids are present only as stroma lamellae. The presence of granal and agranal types of cells allows the occurrance of light reactions (mesophyll cells) and carbon reactions (bundle-sheath cells) to occur separately. In\[{{C}_{3}}\]plants, photosynthesis occurs in only one cell type, i.e., mesophyll cells, and hence both light and carbon reactions occurs in the same cell.
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