Nitrogen fixation is
Nitrogen $→$ Ammonia
Nitrogen $→$ Nitrates
Nitrogen $→$ Amino acids
Both $ (a) $ and $(b)$
An example of endomycorrhiza is
The organisms which are used to enrich the nutrient quality of the soil are called
The best fertilizer for paddy is
The common nitrogenfixer in paddy fields is
Biofertilizers include