By looking at which internal structure of a plant can you tell whether a plant is C3 or C4? Explain.
The internal structure of the leaves of C4 plants have a special anatomy called Kranz anatomy. This makes them different from C3 plants. Special cells, known as bundle-sheath cells, surround the vascular bundles are present in several layers around the vascular bndles. These cells have a large number of chloroplasts. They are thick-walled and have no intercellular spaces. They are also impervious to gaseous exchange. All these anatomical features help distinguish C4 plants from C3 plants.
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