MCQOPTIONS
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				| 1. | 
                                    The structure marked as X in the given figure is not involved in ____. | 
                            
| A. | Gaseous exchange during photosynthesis | 
| B. | Gaseous exchange during respiration | 
| C. | Evaporation of water during transpiration | 
| D. | None of these | 
| Answer» E. | |