You should see the typical DCIM/ folder with just .MISC and 100APPLE sub folders. Then you can track whether a third party app or just an accumulation of various photos is causing the folder structure to grow.
Elodea fulfills all of these conditions; therefore, it is alive and therefore an organism.
Humans exhale carbon dioxide, which is slightly acidic. Carbon dioxide is soluble in water; therefore, if someone were to blow into water with Bromothymol Blue in it, the pH would change. Elodea is a type of algae. It sits in water and can easily survive with small roots because there is an unlimited supply of water all around it.