The first stable product of fixation of atmo- spheric nitrogen in leguminous plants is

Options

A. `NO_(2)^(-)`
B. ammonia
C. `NO_(3)^(-)`
D. glutamate

Answer

B

Explanation

the process of conversion of nitrogen `(N_(2))` to ammonia is termed as nitrogen fixation.
`underset(("Nitrogen"))(N_(2))tounderset(("Dimite"))(N_(2)H_(2))tounderset(("Hydrazine"))(N_(2)H_(4))tounderset(("Ammonia"))(2NH_(3))`
`2NH_(3)+3O_(2)to2NO_(2)^(-)+2H^(+)+2H_(2)O`
`2NO_(2)+O_(2)to2NO_(3)^(-)`
In reductive animation ammonia reacts with `alpha`-ketoglutaric acid and forms glutamic acid
`alpha-`ketoglutaric acid `+NH_(4)^(+)+NADPH`
`underset("Dehygrogenase")overset("Glutamate")to`Clutamate`+H_(2)O+NADP`