Formation of Equation from Statement

Given below are two statements: Statement I: An allotrope of oxygen is an important intermediate in the formation of reducing smog Statement II : Gases such as oxides of nitrogen and sulphur present in troposphere contribute to the formation of photochemical smog. In the light of the above statements, choose the correct answer from the options given below:

Trace the formation of spermatozon from spermatogonium.

Illustration based on formation equation and transformation OF equation