1. Quiz 4 – Vision and Colors 1. Most refraction in the eye occurs at the a) cornea b) fovea c) lens d) pupil

2. Quiz 4 – Vision and Colors 2. The blind spot is the point a) directly behind the pupil b) where the optic nerve is attached c) where the rods are located d) where most cones are located e) none of these

3. Quiz 4 – Vision and Colors 3. Fine tuning of vision (accomodation) is done by a) the cornea b) the fovea c) the crystalline lens d) the retina

4. Quiz 4 – Vision and Colors 4. Myopia is a) untreatable b) also called far-sightedness c) also called near-sightedness d) caused by aging

5. Quiz 4 – Vision and Colors 5. Far-sightedness (hyperopia) is corrected using a) cylindrical lenses b) diverging lenses c) converging lenses d) none of the above

6. Quiz 4 – Vision and Colors 6. Marine mammals a) cannot see well underwater b) have identical visual systems to humans c) have eyes that adapt in and out of water d) use heat sensors e) all of these

7. Quiz 4 – Vision and Colors 7. Color vision in humans a) is referred to as trichromatic b) is the result of three types of cones in the retina c) comes from opponent processing of information from receptors in the retina d) diminishes when light levels are low e) all of the above

8. Quiz 4 – Vision and Colors 8. The additive primary colors are a) red, green and blue b) red, green and yellow c) magenta, cyan and yellow d) magenta, cyan and green

9. Quiz 4 – Vision and Colors 9. The subtractive primary colors are a) red, green and blue b) red, green and yellow c) magenta, cyan and yellow d) magenta, cyan and green

10. Quiz 4 – Vision and Colors 10. The leaf of a growing green plant absorbs sunlight a) mostly at green wavelengths b) almost equally at all wavelengths c) at infrared wavelengths only d) mostly at wavelengths other than green

11. Quiz 4 – Vision and Colors 11. When white light is passed first through a cyan and then a magenta filter, what color results? a) green b) blue c) yellow d) black