I have mixed feelings about this. It could be a snobby chemist being all “without chemicals life itself would be impossible” and at the same time disrespecting the general public’s desire to have labels on the crap they sell us in stores, or it could be an honest and fun attempt to actually point out the chemicals in a banana (and other fruit). The guy’s site is generally pretty good though, lots of resources for teachers. Just gotta keep an eye on those chemists. If you know what I mean.
(I know, the pineapple is depicted, not the banana. Just go see the site you’ll understand.)