Multiple Choice
Which of the following are features of cones and rods?
A) Cones respond to particular wavelengths (colours) ; rods perceive light at low intensity without colour perception.
B) Rods respond to particular wavelengths (colours) ; cones perceive light at low intensities without colour perception.
C) Cones are more sensitive to single photons of light than are rods.
D) Humans have approximately equal numbers of rods and cones, but the cones are primarily localized in the fovea.
Correct Answer:

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Correct Answer:
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