Yes, trees do have cell walls in their cells. In fact, cell walls are a defining characteristic of plant cells, including the cells of trees.

Here's why:

* Structural support: Cell walls provide rigidity and support to the plant cell, allowing trees to grow tall and withstand external forces like wind and gravity.

* Protection: They act as a barrier against external threats like pathogens and pests.

* Water transport: Cell walls play a role in regulating the movement of water and nutrients throughout the plant.

* Cell shape: They help maintain the shape of the cell, which is crucial for the overall structure of the tree.

The cell walls of trees are primarily composed of cellulose, a complex carbohydrate that provides strength and rigidity. They also contain other substances like lignin, which adds further strength and helps the tree to grow tall.

So, the next time you look at a mighty tree, remember that its strength and resilience are made possible by the millions of cells that make up its structure, each with a tough and protective cell wall.