Question:
Which of the following species does not have the ability to fix atmospheric nitrogen?
Which of the following species does not have the ability to fix atmospheric nitrogen?
Updated On: Aug 20, 2024
- Azotobactor
- Anabaena
- Nostoc
- Spirogyra.
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The Correct Option is D
Solution and Explanation
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.
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