Plant cells do have DNA. All living things known by science use DNA as their genetic code. Like almost all living things, plants are eukaryotes, which are defined by their membrane-bound nucleus and other organelles.
Plant cells use the same genetic code as other organisms, but the overall structure of a plant cell is somewhat different from other eukaryotes. The main difference is that plant cells have chloroplasts. Chloroplasts are the small organelles that perform photosynthesis, the process of converting light energy into chemical energy. Plant cells also have firm cell walls that help maintain a rigid structure in the overall organism.