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Question
What are rods and cones in the retina of an eye? Why is our night vision relatively poor compared to the night vision of an owl?
Solution
Rods and cones are the light-sensitive cells in the retina of the eye.
Rods (rod-shaped cells) present in the retina are sensitive to dim light and are vital for vision at night. Humans have a very small number of rod cells in their retina compared with nocturnal animals, such as owls, which have a relatively large number of rod cells in their retina. Hence, human vision is relatively poor compared with the vision of owls, which can see objects at night.
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