Which of the Following Are Features of Cones and Rods

question 61

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.

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