* Nuclear DNA: This is the primary source of DNA, found within the nucleus of the cell. It contains the majority of the genetic information that controls the plant's development, growth, and function.

* Mitochondrial DNA (mtDNA): Mitochondria are organelles responsible for cellular respiration. They have their own separate DNA, which is inherited maternally (from the egg cell). mtDNA codes for proteins involved in mitochondrial function.

* Chloroplast DNA (cpDNA): Chloroplasts are organelles responsible for photosynthesis. Like mitochondria, they have their own DNA, which is also inherited maternally. cpDNA encodes proteins involved in photosynthesis and other chloroplast functions.

Therefore, a plant cell has three distinct sources of DNA, each with its own specific function:

* Nuclear DNA: Controls overall development and function.

* Mitochondrial DNA: Controls cellular respiration.

* Chloroplast DNA: Controls photosynthesis.