Question

The best defined role of manganese in green plants is
A. Nitrogen fixation
B. Water absorption
C. Photosynthesis of water
D. Calvin cycle

Answer 1

Manganese the chemical element with symbol Mn and atomic number 25. it is not found as a free element in nature. It is often found in minerals in combination with iron. Manganese is a transition metal with The multifaceted array of industrial alloy uses, particularly in stainless steels.

Complete answer: Manganese Mn is used for fertilizers of water to produce Oxygen and electrons during light reaction of photosynthesis. which is the phenomenon of breaking up water into hydrogen and oxygen in the illuminated chloroplast it acts as an essential cofactor.
The process of photosynthetic water oxygen to dioxygen under proton release takes place via a sequence of four equivalent redox steps in a Manganese containing unit. English mini-review the current state of knowledge is briefly described with special emphasis on the following topics.-
-The nature of the catalyst site
-The structure of the redox chemistry of the manganese containing active site
-The ligand structure and entry of substrate water into the redox cycle.
-The problems of the stoichiometry are a proton release coupled with individual redox steps and the possible role of other cofactors. ( Cl-, Ca2 +)
Photolysis, chemical process by which molecules are broken down into smaller units to the absorption of light
The splitting of decomposition of chemical compounds by means of light energy of photons supplement. For example, the photolysis of water molecule in photosynthesis occurred under the influence of light
So from above discussion we can conclude that correct answer is option C, Photolysis of water

Note: Photolysis refers to the splitting of water using light energy. It occurs during light reaction in photosynthesis. In the chloroplast granum. The mineral ions essential for the process of photolysis of water are manganese, chlorine and calcium.