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.

I is true, but II and III are false

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I and II are true; but III is false

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II is true; but I and III are false

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I and II are true, but III is false

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Solution

The correct option is D I and II are true, but III is false
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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Similar questions

Q. Consider the following statements. State which among the following is true and false.
(A) The portion of the spectrum between 500nm and 800nm is also referred to as photosynthetically active radiation.
(B) Magnesium, calcium and chloride ions play prominent roles in the photolysis of water.
(C) In cyclic photophosphorylation oxygen is not released and NADPH is also not produced.

Consider the following statements:

(a) The portion of the spectrum between 500 nm and 800 nm is also referred to as photosynthetically active radiation (PAR).

(b) Magnesium, calcium and chloride ions play prominent roles in the photolysis of water.

(c) In cyclic photophosphorylation, oxygen is not released (as there is no photolysis of water) and NADPH is also not produced.

Of these statements given above,

Q. Which of the following statements are correct?
(a) A portion of spectrum between 500-800 nm is PAR.
(b) Mg, Ca, CI have a prominent role in the photolysis of water.
(c) In cyclic photophosphorylation, O

_{2}

and NADPH are not produced.

Assertion: Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids.
Reason: Photolysis of water takes place in the inner membrane of thylakoids.

Q. Assertion :Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids. Reason: Photolysis of water takes place in inner membrane of thylakoid.

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