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Question : By looking at which internal structure of a plant can you tell whether a plant is C_(3) or C_(4)? Explain.

Answer»

Solution :By studying the internal structure of a leaf, it is possible to tell whether the plant is `C_(3) or C_(4).`The vascular bundles of leaves in `C_(4)`PLANTS are called bundle SHEATH CELLS and show Kranz anatomy. The bundle sheath cells may form several layers around the vascular bundles. Each bundle sheath cell possess chloroplasts which are radially elongated. Chloroplasts in the cells of bundle sheath lack GRANA, while mesophyll chloroplasts are normal in `C _(3)` plants.


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