1. Tardigrade
  2. Question
  3. Biology
  4. Which of the following species does not have the ability to fix atmospheric nitrogen?

Q. Which of the following species does not have the ability to fix atmospheric nitrogen?

 3283  224 AIPMTAIPMT 1994Microbes in Human Welfare Report Error

Solution:

Members of kingdom monera - bacteria and cyanobacteria (blue green algae) have the ability to fix nitrogen. Azotobacter is a N2-fixing bacteria. Anabaena and Nostoc are heterocystous blue-green algae. The heterocysts are the sites of N2-fixation. Spirogyra is one of the commonest green algae. It has no function in nitrogen fixation.