During photosynthesis

Options

A. `O_(2)` evolved comes from `CO_(2)`
B. ATP is formed
C. ATP is not formed
D. Water is required as medium but it does not take part in photosynthesis

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants and other organisms with chlorophyll convert light energy into chemical energy. This process is essential for producing glucose, which serves as food for the plant.

2. **Overall Equation of Photosynthesis**: The general equation for photosynthesis can be represented as:
\[ 6CO_2 + 6H_2O \xrightarrow{\text{light}} C_6H_{12}O_6 + 6O_2 \]
This indicates that carbon dioxide (CO2) and water (H2O) are used to produce glucose (C6H12O6) and oxygen (O2).

3. **Analyzing the Options**:
- **Option 1**: "O2 evolves from CO2" - This is incorrect because the oxygen produced during photosynthesis comes from the water molecule (H2O), not from carbon dioxide.
- **Option 2**: "ATP is formed" - This is correct. During photosynthesis, ATP (adenosine triphosphate) is generated as a form of chemical energy.
- **Option 3**: "ATP is not formed" - This is incorrect, as ATP is indeed produced during the process.
- **Option 4**: "Water is required as medium but it does not take part in the process of photosynthesis" - This is incorrect because water is not only required but also plays a crucial role in the photosynthesis process.

4. **Conclusion**: Based on the analysis of the options, the correct statement regarding photosynthesis is that **ATP is formed** during the process.

**Final Answer**: During photosynthesis, ATP is formed.

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