Here's why:

* Eukaryotic Cells: Plants are eukaryotes, meaning their cells have a membrane-bound nucleus.

* Nucleus Function: The nucleus houses the cell's genetic material (DNA) in the form of chromosomes. This DNA controls the cell's activities and is essential for growth, development, and reproduction.

So, plants are distinct from prokaryotes (like bacteria) which lack a nucleus and have their DNA floating freely in the cytoplasm.