Azotobacter is a genus of bacteria that live in soil and have the following characteristics: a. They are bacilli. b. They are gram-negative. c. They are obligate aerobes. d. They can fix nitrogen. (Unlike some other nitrogen-fixing bacteria, which associate with the roots of plants, Azotobacter species are free-living.)

Question

Biology

Helen Clark

27 December, 11:15

Azotobacter is a genus of bacteria that live in soil and have the following characteristics: a. They are bacilli. b. They are gram-negative. c. They are obligate aerobes. d. They can fix nitrogen. (Unlike some other nitrogen-fixing bacteria, which associate with the roots of plants, Azotobacter species are free-living.)

+2

Answers (1)

Know the Answer?

Francesca Jacobson · Answer 1

The correct answer will be - all options are correct.

Explanation:

Azotobacter is a genus or a group of bacteria which are involved in the process of nitrogen fixation.

The bacteria can be easily identified by their rod-shaped form and gram staining. Gram staining results show that they are gram-negative bacteria as they stain pink in color due to the thin peptidoglycan layer.

They require oxygen to perform cellular respiration so are called obligate aerobes. Also, they can fix the atmospheric nitrogen by converting it into ammonia.

Thus, all the options are correct.