Assertion: Six molecules of $CO_2$ and twelve molecules of $NADPH + H^+$ and $18\, ATP$ are used to form one hexose molecule.
Reason: Light reaction results in the formation of $ATP$ and $NADPH_2$.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

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Similar Questions

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.

Assertion : Photosynthesis is important due to two reasons.
Reason : Photosynthesis is the primary source of food on earth and responsible for the release of oxygen from green plants.

Match List-$I$ with List-$II$:
List-$I$List-$II$
$a.$ $3$-carbon organic acid$I.$ Product of light reaction
$b.$ $\text{ATP}$ and $\text{NADPH}$$II.$ Reactants of dark reaction
$c.$ $\text{CO}_2$$III.$ First $\text{CO}_2$ fixation product in dark reaction
$d.$ Oxaloacetic acid$IV.$ First product of $\text{CO}_2$ fixation in the $C_4$ pathway

Choose the correct answer from the options given below:

For the process of photosynthesis,all except one of the following items are essential. Point out the exception.

Provide definitions/explanations for the following terms:
$(1)$ Dark reaction
$(2)$ Photophosphorylation

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