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Which is false for colour vision? a. At least two cone classes are needed to discriminate wavelength.b. Three cone classes are able to discriminate more wavelengths than just two.c. Only one cone class is needed to discriminate wavelength because each cone class is sensitive to a wide range of wavelengths.d. People who are colour deficient (sometimes called colour blind) can discriminate fewer wavelengths of light than those with normal vision.e. In general, the number of metamers decreases with the number of cone classes that an organism has.

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