Which of the following is a correct statement?
a. Cones respond to particular wavelengths (colors), rods perceive light at low intensity
without color perception.
b. Rods respond to particular wavelengths (colors), cones perceive light at low intensities
without color perception.
c. Cones are more sensitive to single photons of light than are rods.
d. Nocturnal animals have a high concentration of cones in their eyes and relatively few rods.
e. Humans have approximately equal numbers of rods and cones, but the cones are primarily
localized in the fovea.
A
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a. True b. False
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