Question

Which among the following is free living nitrogen fixing bacteria?

• A. $\text{Bacillus licheniformis}$
• B. $\text{Bacillus vulgaris}$
• C. $\text{Salmonella}$
• D. $\text{Clostridium}$

Answer 1

The correct option is D $\text{Clostridium}$

Answer (1)

• $\text{Bacillus licheniformis}$ produced the antibiotic bacitracin.
• $\text{Clostridium}$ is a free living nitrogen fixing bacterium.
• $\text{Salmonella typhi}$ causes typhoid.