FNGLA's Plant ID Website provides photos of many of the plants included on FNGLA's certification exams plus FFA Career Development Events. They are set up as flashcards so you can peruse the photos and test yourself on their names. Keep in mind, this is not an exhaustive list, but we will be continually adding photos.
To use this site, choose the region you wish to study, then the type of plant, whether Trees, Shrubs, etc. In the lower right of the photos you see a double arrow with a hand on it. Swipe and you will move to the next image.