Here's how it works:

1. Leaves are flat and wide: This maximizes the surface area exposed to sunlight.

2. Leaves contain chlorophyll: Chlorophyll is a green pigment that absorbs sunlight.

3. Photosynthesis: The absorbed sunlight energy is used in a process called photosynthesis. During photosynthesis, trees use sunlight, water, and carbon dioxide to produce their own food (sugars) and release oxygen.

Sunlight is essential for trees to:

* Grow: Sunlight provides the energy for photosynthesis, which fuels the growth of leaves, branches, and roots.

* Produce flowers and fruits: Sunlight is necessary for the process of flowering and fruit production.

* Stay healthy: Sunlight helps trees fight off diseases and pests.

Different types of trees have different needs for sunlight:

* Sun-loving trees: These trees need plenty of direct sunlight to thrive.

* Shade-tolerant trees: These trees can tolerate lower levels of sunlight.

So, to answer your question directly, trees get sunlight through their leaves, which are specifically designed to absorb and utilize the energy from the sun.