Human eye anatomy quiz diagram labeling, eye anatomy model, interactive eye diagram quiz. This is an exercise for students to label a simple blank eye diagram with the following parts: iris, optic nerve, pupil, cornea, lens, retina. For us to see, there has to be light. When light shines on an object, a reflection is sent which passes through the eye lens and later projects the image of the object on the retina which ends up being sent to the brain by optic nerves for interpretation. This diagram is online and students can learn multiple times how to draw and label an eye. However, there is a printable worksheet on labeling an eye which can be downloaded for offline practice. | Multiple choice quiz featuring biology test questions for students to review biology topics. Click on each question and select the correct answer below and submit. Feedback is instant and at the end you will get your score. Biology quiz for 2nd, 3rd, 4th, 5th, 6th, 7th grades to review. Focus: Online science Trivia | science quiz questions | Biology Test | Biology questions.