The autotrophic mode of nutrition requires

Options

A. carbon dioxide and water
B. chlorophyll
C. sunlight
D. all of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Autotrophic Nutrition**:
- Autotrophic nutrition is a mode of nutrition where organisms, primarily green plants and some bacteria, produce their own food.

2. **Key Ingredients for Photosynthesis**:
- The process of photosynthesis is crucial for autotrophic nutrition. It requires several key components:
- **Carbon Dioxide (CO2)**: This gas is absorbed from the atmosphere through the plant's leaves.
- **Water (H2O)**: Plants take up water from the soil through their roots.
- **Chlorophyll**: This green pigment found in the chloroplasts of plant cells is essential for capturing sunlight.
- **Sunlight**: This energy source is necessary for driving the photosynthesis process.

3. **Combining the Ingredients**:
- All these components work together in the photosynthesis process to convert carbon dioxide and water into glucose (a form of sugar) and oxygen, which is released as a byproduct.

4. **Conclusion**:
- Since all the components listed (carbon dioxide, water, chlorophyll, and sunlight) are required for the autotrophic mode of nutrition, the correct answer to the question is **D. All of these**.

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