Here's why:

* Chromosomes carry genetic information: They contain DNA, which holds the instructions for building and maintaining an organism.

* All living organisms need DNA: Plants and animals, like all living things, need DNA to function.

* Eukaryotic cells have chromosomes: Both plants and animals are eukaryotic organisms, meaning their cells have a nucleus where the chromosomes are located.

So, whether it's a leaf on a tree or a muscle cell in your body, chromosomes are present in both to ensure the continuation of life!