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Q. In $C_{4}$ plants, the bundle sheath cells

Delhi UMET/DPMTDelhi UMET/DPMT 2011Photosynthesis in Higher Plants

Solution:

In the leaves of $C_{4}$ plants, the vascular bundles are surrounded by bundle sheath of larger parenchymatous cells, which in turn are surrounded by mesophyll cells. Bundle sheath cells have a high density of larger chloroplasts which always lack grana whereas chloroplasts of mesophyll cells are smaller.