Questions in diversity-of-life

Select	Question
	Which one of the following can utilize molecular nitrogen ($N_2$) as nutrient for growth
	Which of the following is used to cure off the bitterness of tea leaves
	Which of the following soil microorganisms breaks down plant and animal protein into ammonia
	The bacteria found in nodules of family leguminoseae are
	Which bacteria convert ammonium salts into nitrite
	Which of the following is non-symbiotic biofertilizer
	Which is not help in ${N_2}$ fixation
	Fermentation is by
	Plasmid is used as carrier because
	The bacteria (Clostridium botulinum) that cause botulism are