Rods and cones are similar in that they both _____. see concept 50.3 (page 1117) view available hint(s) rods and cones are similar in that they both _____. see concept 50.3 (page 1117) respond to all wavelengths of light depolarize when exposed to light fire action potentials when exposed to light use photopsins as the visual pigments in both rods and cones release glutamate as the primary neurotransmitter