Microbiology of Soils
In the process of nitrogen fixation, which of the following microorganism is involved?

Non symbiotic microorganisms only
Non symbiotic and symbiotic microorganisms only
None of these
Symbiotic microorganisms only

ANSWER DOWNLOAD EXAMIANS APP

Microbiology of Soils
Nitrogen fixation by the microorganisms can be detected by adopting the approach of

All of these
demonstrating growth in a nitrogen free medium
measuring15N2 by mass spectrometer
cultivating the microorganisms in the presence of nitrogen labeled with isotropic nitrogen

ANSWER DOWNLOAD EXAMIANS APP