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Assertion : When six molecules of carbo...

Assertion : When six molecules of carbon dioxide participate ini photosynthesis , 12 molecules of NADPH + `H^(+)` and 18 ATP are used up , forming one hexose molecule.
Reason : The photosynthesis light reaction results in the formation of ATP and `NADPH_(2)` .

A

If both the assertion and reason are true and reason is correct explanation of the assertion .

B

If both the assertion and reason are true but reason is not a correct explanation of the assertion .

C

If the assertion is true but the reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided in the context of photosynthesis. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that when six molecules of carbon dioxide (CO₂) participate in photosynthesis, 12 molecules of NADPH + H⁺ and 18 ATP are used to form one hexose molecule (C₆H₁₂O₆). - This is consistent with the Calvin cycle, which is the light-independent reaction of photosynthesis where CO₂ is fixed into glucose using energy from ATP and reducing power from NADPH. 2. **Understanding the Reason**: - The reason states that the light reaction of photosynthesis results in the formation of ATP and NADPH. - This is true, as the light-dependent reactions (or light reactions) of photosynthesis convert solar energy into chemical energy in the form of ATP and NADPH. 3. **Evaluating the Truth of Both Statements**: - Both the assertion and reason are true based on the principles of photosynthesis. - However, the reason does not directly explain the assertion. The assertion is about the consumption of ATP and NADPH in the Calvin cycle, while the reason discusses the light reactions that produce these molecules. 4. **Conclusion**: - Since both statements are true but the reason does not serve as a correct explanation for the assertion, the correct answer is: - **Both assertion and reason are true, but the reason is not the correct explanation of the assertion.** ### Final Answer: The correct option is: **Both assertion and reason are true, but reason is not the correct explanation of the assertion.**
To solve the question, we need to analyze both the assertion and the reason provided in the context of photosynthesis. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that when six molecules of carbon dioxide (CO₂) participate in photosynthesis, 12 molecules of NADPH + H⁺ and 18 ATP are used to form one hexose molecule (C₆H₁₂O₆). - This is consistent with the Calvin cycle, which is the light-independent reaction of photosynthesis where CO₂ is fixed into glucose using energy from ATP and reducing power from NADPH. ...
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