Question:medium
Which of the following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:
Which of the following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:
Show Hint
Many cyanobacteria, like Anabaena and Nostoc, have specialized cells called heterocysts that help them fix nitrogen. Organisms like Volvox do not possess this ability.
Updated On: Nov 26, 2025
- D only
- B only
- E only
- A only