The retina of nocturnal birds contains:

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(B) The retina of the eye contains two types of photoreceptor cells: rods and cones.$1$. Rods are sensitive to dim light (scotopic vision) and are res

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Rods only

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(B) The retina of the eye contains two types of photoreceptor cells: rods and cones.$1$. Rods are sensitive to dim light (scotopic vision) and are responsible for vision in low-light conditions.$2$. Cones are sensitive to bright light (photopic vision) and are responsible for color vision and high-resolution visual acuity.$3$. Nocturnal birds,such as owls,are active during the night and require high sensitivity to dim light to hunt.$4$. Therefore,their retina is predominantly composed of rods,which allow them to see in the dark. Thus,the retina of nocturnal birds contains only rods.

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