Cones

A. False They are in the layer furthest from the vitreous humour.

B. False They hyperpolarize in response to light due to closure of Na+ channels in the membrane.

C. False Rhodopsin is the most sensitive of the pigments.

D. True Cone pigments absorb light at wavelengths of 440, 535 and 565 nm; yellow-green light shows up relatively well in dim light.

E. False Colour-blind individuals have cones but they lack one or more of the three cone systems that respond to the three primary colours.