Biological Classification Question 46
46. Nitrogen fixer soil organisms belong to
[1994]
(a) mosses
(b) bacteria
(c) green algae
(d) soil fungi
Show Answer
Answer : b
Hints & Solutions
(b) Only some bacteria and blue green algae (cynobacteria) have the capacity to fix atmospheric nitrogen.
- Bacteria : Azotobacter, Rhizobium, Frankia etc.
- Blue green algae : Nostoc, Oscillatoria, Anabaena etc.
