Which of the following is the best explanation for our perception of color?

Question

BlackTom AI · Accepted Answer

Question: Which of the following is the best explanation for our perception of color?

Option A: 'As many as 100 cones may converge on one ganglion cell.' This statement describes a potential convergence pattern in the retina, but color perception is not primarily explained by such high convergence; it is the combination of signals from different cone types that underlies color vision, not the magnitude of convergence to a single ganglion cell.

Option B: 'Rods are responsible for colour vision.' This is inaccurate. Rods are more light-sensitive and support vision in low-light conditions, but they do not convey color information. Color vision relies on cones, not rods.

Option C: 'Rods contain a single kind of visual pigment.' While technically rods have a single type of visual pigment (rhodopsin), this fact is associated with scotopic (low-light) vision, not color perception, which depends on the differential response of multiple cone pigments.

Option D: 'The foveae are densely packed with cones.' It is true that the fovea is densely populated with cones and is critical for high-acuity color vision, but saying this alone best explains color perception is incomplete. It describes the anatomical basis for sharp vision, not the fundamental explanation of color detection across the visual field.

Option E: 'Cones come in three types, each sensitive to different wavelengths of light.' This aligns with the trichromatic theory of color vision: three cone types peak at different wavelengths (roughly short, medium, and long). The brain interprets color by comparing the relative activations of these three cone types, making this the best explanation for color perception among the options.

In summary, A wrongly emphasizes convergence magnitude, B incorrectly assigns color to rods, C points to rods’ pigment rather than color cones, D mentions anatomy without explaining color processing, and E correctly captures the core concept of color perception through three cone types with distinct spectral sensitivities.

Which of the following is the best explanation for our perception of color?单项选择题

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