 
			 
			MCQOPTIONS
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				| 1. | Which of the following soil microorganism is involved in the reduction of sulfates to H2S? | 
| A. | <i>Thiobacillus thiooxidans</i> | 
| B. | <i>Desulfotomaculum</i> | 
| C. | <i>Rhodospirillum</i> | 
| D. | <i>Rhodomicrobium</i> | 
| Answer» C. <i>Rhodospirillum</i> | |