Site of photosynthesis in leaves.

Explanation

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Start by recognizing that photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, specifically glucose, using carbon dioxide and water.

2. **Location of Photosynthesis in Leaves**: Identify that photosynthesis primarily occurs in the leaves of plants. However, the question specifically asks for the site within the leaves.

3. **Chloroplasts as the Site of Photosynthesis**: Explain that the site of photosynthesis in leaves is the chloroplasts. These are specialized organelles found in plant cells.

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