Photosynthetic synthesis of carbohydrates uses `CO_(2)` and

Options

A. Water in the presence of sunlight with the help of chlorophyll
B. Water in the presence of energy
C. Water with the help of chlorophyll
D. Presence of sunlight.

Answer

To answer the question regarding the photosynthetic synthesis of carbohydrates, we can break down the process step by step.

### 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 (carbohydrates). This process primarily occurs in the chloroplasts of plant cells.

2. **Key Components of Photosynthesis**:
- **Carbon Dioxide (CO₂)**: This gas is absorbed from the atmosphere through the stomata of leaves.
- **Water (H₂O)**: Water is absorbed by the roots from the soil.
- **Sunlight**: Light energy is captured by chlorophyll, the green pigment in plants.
- **Chlorophyll**: This pigment is essential for absorbing light energy.

3. **The Photosynthesis Reaction**: The overall chemical equation for photosynthesis can be summarized as:
\[ 6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2 \]
This equation indicates that six molecules of carbon dioxide and six molecules of water, in the presence of light energy, produce one molecule of glucose and six molecules of oxygen.

4. **Process Breakdown**:
- **Light Reaction**: In the presence of sunlight, chlorophyll absorbs light energy, which is used to split water molecules (photolysis) into oxygen, protons, and electrons. This process generates ATP and NADPH, which are energy carriers.
- **Dark Reaction (Calvin Cycle)**: The ATP and NADPH produced in the light reaction are then used in the Calvin cycle to convert carbon dioxide into glucose.

5. **Conclusion**: Therefore, the photosynthetic synthesis of carbohydrates uses carbon dioxide and water in the presence of sunlight and chlorophyll.

### Final Answer:
The correct statement is: **Photosynthetic synthesis of carbohydrates uses carbon dioxide and water in the presence of sunlight with the help of chlorophyll.**

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