 
			 
			MCQOPTIONS
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				| 1. | Which one of the following is true about C4 plants? | 
| A. | They minimize rubisco oxygenase activity by fixing CO<sub>2</sub> into oxaloacetate | 
| B. | They mainly occur in areas of high temperature and light intensity | 
| C. | They minimize the rubisco oxygenase activity by fixing CO<sub>2</sub> into phosphoenolpyruvic acid | 
| D. | C<sub>3</sub> plants are more efficient in photosynthesis than C<sub>4</sub> plants | 
| Answer» B. They mainly occur in areas of high temperature and light intensity | |