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Question

Consider the following statements. I. The portion of the spectrum between 300-500 nm is also referred to as photosynthetically active radiation (PAR) II. Magnesium, calcium and chloride ions play prominent roles in the photolysis of water. III. In cyclic phosphorylation, oxygen is not released (as there is no photolysis of water) and NADPH is also not produced.

A
I is true, but II and III are false
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B
I and II are true; but III is false
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C
II is true; but I and III are false
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D
I, II and III are true
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Solution

The correct option is D I, II and III are true

The portion of the spectrum between 400 – 700 nm is referred to as photosynthetically active radiation. Manganese and chloride ions play a prominent role in the photolysis of water. Oxygen is released because of photolysis of water and NADPH is produced in non-cyclic photophosphorylation.


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