For the process of photosynthesis, which one of the following is not essential ?

Options

A. Light and chlorophyll
B. `CO_2` and light
C. Oxygen and glucose
D. Water and minerals

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process takes place primarily in the chloroplasts of plant cells.

2. **Identifying the Essential Components**: The essential components required for photosynthesis include:
- **Light**: Provides the energy needed for the reaction.
- **Chlorophyll**: The green pigment that captures light energy.
- **Carbon Dioxide (CO2)**: Obtained from the atmosphere, it is one of the raw materials for glucose production.
- **Water (H2O)**: Absorbed by the roots, it is another raw material necessary for the process.

3. **Analyzing the Options**: The question provides four pairs of substances:
- Light and Chlorophyll
- Carbon Dioxide and Light
- Oxygen and Glucose
- Water and Minerals

4. **Determining Non-Essential Components**: Among these options, we need to identify which pair is not essential for photosynthesis:
- **Light and Chlorophyll**: Both are essential.
- **Carbon Dioxide and Light**: Both are essential.
- **Oxygen and Glucose**: These are products of photosynthesis, not reactants. Therefore, they are not essential for the process itself.
- **Water and Minerals**: Water is essential; minerals support plant health but are not directly involved in the photosynthesis reaction.

5. **Conclusion**: The correct answer is **Oxygen and Glucose**, as they are products of photosynthesis and not necessary for the process to occur.

**Final Answer**: Oxygen and Glucose are not essential for the process of photosynthesis.

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