Given below are the events of photosynthesis. Identify which of the following is/are not true and select the correct option.
(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.

Options

A. (i) and (ii) only
B. (ii) only
C. (ii) and (iii) only
D. (ii) and (iv) only

Explanation

To solve the question regarding the events of photosynthesis and identify which statements are not true, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (i): Absorption of light energy by chlorophyll.**
- This statement is true. Chlorophyll is a pigment in plants that absorbs light energy from the sun, which is essential for photosynthesis.

2. **Statement (ii): The assimilatory power in the form of NADPH and ATP are produced during dark phase.**
- This statement is not true. NADPH and ATP are produced during the light-dependent reactions (light phase) of photosynthesis, not during the dark phase. The dark phase (Calvin cycle) uses these products to synthesize glucose.

3. **Statement (iii): Reduction of carbon dioxide to carbohydrates.**
- This statement is true. During the dark phase of photosynthesis, carbon dioxide is reduced to form carbohydrates (like glucose) using the energy stored in NADPH and ATP.

4. **Statement (iv): Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen.**
- This statement is not true. In photosynthesis, solar energy (radiant energy) is converted into chemical energy, not the other way around. The splitting of water molecules (photolysis) does occur, producing hydrogen and oxygen, but the conversion mentioned is incorrect.

### Conclusion:
The statements that are not true are:
- Statement (ii): The assimilatory power in the form of NADPH and ATP are produced during dark phase.
- Statement (iv): Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen.

Thus, the correct option that identifies the false statements is option number 4.