Question

Explain nitrogen cycle

Answer 1

$\large{\underline{\rm{\blue{Nitrogen\:cycle:-}}}}$

● Nitrogen is the most prevalent element in living organisms.

● Plants compete with microbes for the limited nitrogen in soil.

● The process of conversion of nitrogen to ammonia is termed as nitrogen fixation.

● In nature, lightning and UV radiation provide energy to Industrial combustions, forest fires, automobile exhausts and power-generating stations are also sources ofvatmospheric nitrogen oxides.

● Actually, the decomposition of the organic nitrogen of the dead plants and animals into ammonia is called ammonification.

● Some of this ammonia volatilizes and re-enters the atmosphere but most of it is converted into nitrate by soil bacteria in the following steps:-

→ 2NH3 + 302 → 2NO2 + 2H+ + 2H20

→ 2NO2 + O2 → 2NO3 -

Answer 2

atmosphere is made up of many gases. The main gas is nitrogen which is 78% of total gas. Nitrogen is one of the essential constitution of living organisms as part of protein, chlorophyll,nucleic acid and vitamin.The atmospheric nitrogen can not be taken directly by plants.

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