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Given below are the events of photosynth...

Given below are the events of photosynthesis. Identify which of the following is/are not true?
(i) Absorption of light energy by chlorophyll.
(ii) The assimilatory power in the form of NADPH and ATP are produced during dark phase.
(iii) Reduction of carbon dioxide to carbohydrates
(iv) Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen.

A

(i) and (ii) only

B

(ii) only

C

(ii) and (ii) only

D

(ii) and (iv) only

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate each statement related to the process of photosynthesis and determine which ones are not true. ### Step-by-Step Solution: 1. **Evaluate Statement (i)**: - **Statement**: Absorption of light energy by chlorophyll. - **Analysis**: This statement is true. Chlorophyll absorbs light energy, which is essential for the photosynthesis process. - **Conclusion**: True. 2. **Evaluate Statement (ii)**: - **Statement**: The assimilatory power in the form of NADPH and ATP are produced during the dark phase. - **Analysis**: This statement is false. NADPH and ATP are produced during the light-dependent reactions (light phase) of photosynthesis, not during the dark phase. - **Conclusion**: False. 3. **Evaluate Statement (iii)**: - **Statement**: Reduction of carbon dioxide to carbohydrates. - **Analysis**: This statement is true. During photosynthesis, carbon dioxide is reduced to form carbohydrates (like glucose). - **Conclusion**: True. 4. **Evaluate Statement (iv)**: - **Statement**: Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen. - **Analysis**: This statement is false. In photosynthesis, radiant energy (light energy) is converted into chemical energy (in the form of glucose), and water is split into hydrogen and oxygen, not the other way around. - **Conclusion**: False. ### Final Evaluation: - From the analysis, we find that: - Statement (i) is true. - Statement (ii) is false. - Statement (iii) is true. - Statement (iv) is false. Thus, the statements that are not true are (ii) and (iv). ### Answer: The statements that are not true are (ii) and (iv).
To solve the question, we need to evaluate each statement related to the process of photosynthesis and determine which ones are not true. ### Step-by-Step Solution: 1. **Evaluate Statement (i)**: - **Statement**: Absorption of light energy by chlorophyll. - **Analysis**: This statement is true. Chlorophyll absorbs light energy, which is essential for the photosynthesis process. - **Conclusion**: True. ...
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