Question

The bacteria which are involved in N2 fixation are *

rhizobium

putrefying bacteria

denitrifying bacteria

rod shaped bacteria​

Answer 1

Answer:

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rhizobium

Answer 2

Answer:

Two kinds of nitrogen-fixing bacteria are recognized. The first kind, the free-living (nonsymbiotic) bacteria, includes the cyanobacteria (or blue-green algae) Anabaena and Nostoc and genera such as Azotobacter, Beijerinckia, and Clostridium.