MCQ
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 photophosphorylation, 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
  • $I$ and $II$ are false; but $III$ is true
  • C
    $II$ is true; but $I$ and $III$ are false
  • D
    $I$ and $II$ are true; but $III$ is false

Answer

Correct option: B.
$I$ and $II$ are false; but $III$ is true
b
The portion of spectrum between $400-700 \;nm$ is referred to as Photosynthetically Active Radiation. Manganese and chloride ions play prominent role in photolysis of water.

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