41.Non-symbiotic nitrogen fixers are A. Azotobacter B. Pseudomonas C. Soil fungi D. Blue green algae
Option A. The atmospheric nitrogen is not available for the plants. There are certain bacteria which converts atmospheric nitrogen into ammonia and made available for plants. There are 2 types of nitrogen-fixing bacteria, free-living (nonsymbiotic) bacteria, and non-free-living (symbiotic) bacteria. Examples of free-living bacteria include cyanobacteria, Azotobacter, Clostridium.
