Define the process of making food by the plants.

Answer

**Step-by-Step Solution:**

1. **Definition of the Process**: The process by which plants make their food is called **photosynthesis**.

2. **Location of Photosynthesis**: Photosynthesis primarily occurs in the **green leaves** of plants.

3. **Key Components Required**:
- **Sunlight**: Plants require sunlight as the primary energy source for the process.
- **Water**: Water is absorbed by the roots and transported to the leaves.
- **Chlorophyll**: This is a green pigment found in the chloroplasts of plant cells, which is essential for capturing sunlight.

4. **Function of Chlorophyll**: Chlorophyll plays a crucial role in photosynthesis by absorbing sunlight, which is necessary for converting carbon dioxide and water into glucose (a type of sugar) and oxygen.

5. **Overall Equation**: The general equation for photosynthesis can be summarized as:
\[ 6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2 \]
This means 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.

6. **Importance of Photosynthesis**: This process is vital for life on Earth as it provides oxygen for respiration and is the foundation of the food chain.