There is little a difference in terms where the mitochondria in present (here animal or plant) which is of course the associated functions with the other organelle and the evolutionary differences, but basically there is not much difference in them as being the powerhouse of cell.

https://www.journals.uchicago.edu/doi/10.2307/1536370

https://www.quora.com/How-do-mitochondria-of-a-plant-and-animal-cell-differ

Databases for you to play with

https://www.ncbi.nlm.nih.gov/genome/browse#!/organelles/

https://www.ncbi.nlm.nih.gov/genomes/GenomesGroup.cgi?opt=organelle&taxid=2759&sort=Genome

https://www.hsls.pitt.edu/obrc/index.php?page=organelle

Hope it helps!