Does plant cells have a nucleus?

Yes. Plant cells are eukariotic which means they have a nucleus, opposed to prokariotic cells with no nucleus like bacteria. The only main differences between a plant cell and an animal cell is that a plant cells has a cell wall, chloroplast, a bigger vacuole, and no lysosomes. Also when a animal cell dies it is broken down, but a plant cell's cell wall stays to provide structure even after its dead. So all plant cells have a nucleus.