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  4. In C4 plants, initial CO2 fixation takes place in the chloroplasts of

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Q. In $ C_{4} $ plants, initial $ CO_{2} $ fixation takes place in the chloroplasts of

Chhattisgarh PMTChhattisgarh PMT 2004

Solution:

In the leaves of $C_4$-plants the vascular bundles are surrounded by bundle sheath of large parenchymatous cells, which in turn are surrounded by mesophyll cells. Chloroplast in bundle sheath cells are larger and always contain grana. Whereas, chloroplast in mesophyll cells are smaller. In maize and sugarcane plasmodesmata are present, which connect cells of bundle sheath with mesophyll cells.