Question

Manganese is required in
A. Nucleic acid synthesis
B. Plant cell formation
C. Photolysis of water during photosynthesis
D. Chlorophyll synthesis

Answer 1

Hint:Manganese is an element whose chemical symbol is Mn and is having atomic number 25.
It is mainly found in minerals mainly in combination with iron.
Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steel.

Complete answer: Photosynthesis is a light-dependent process in which pigment molecules known as chlorophyll absorb energy from sunlight.
The main and first step of this reaction starts with a light photon striking the Photosystem II (PSII) to initiate photosynthesis.
This absorption of light energy helps split water molecules into hydrogen and oxygen, generating some free electrons.
Each splitting of a water molecule releases a pair of electrons that form the electron transport chain and initiate the pumping of hydrogen molecules into the inner part of the chloroplast called thylakoid.
This becomes an electrochemical gradient in which ions move through two sets of enzymes called NADP Reductase and ATP synthase that is responsible for generating energy molecules Adenosine Triphosphate or ATP and reducing power (NADPH).
This results in the formation of sugars in the outermost part of the chloroplast during the Calvin cycle.
Mn is called the element of life because, without water splitting, the chain reaction that leads to fixing Carbon Dioxide and water to convert it to carbohydrates would be broken.

So, the correct option is option C.Photolysis of water.

Note: Manganese (Mn) is an essential micronutrient that while needed in small amounts, plays a key role in photosynthesis.
Mn sparks the photosynthesis process by splitting water after Photosystem II (PSII) fixes light to initiate the conversion of Carbon Dioxide and water into carbohydrates.