The nitrogen is present in the atmosphere in huge amount but plants fail to utilize it . Why ?

Explanation

1. Plants absorb minerals from the soil along with water the help of minerals are absorbed as salts .
2. Nitrogen is present in large in quantities in the atmosphere in a gaseous form the gaseous nitrogen must be fixed in form of nitrate salts in soil to facilitate absorption by plants .
3. Nitrogen fixation can occur only by
a) Non - Biological means (Industrial processes or lightning )
b) Biological means (bacteria / Cyanobacteria Fungi )
Therefore higher plants cannot utilize the atmospheric nitrogen .