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The eye of the nocturnal birds like owl ...

The eye of the nocturnal birds like owl are having a large cornea and a large pupil. How does it help them ?

Text Solution

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(i) The large pupil open wider and allows the maximum amount of light to enter the eye in the dark .
(ii) Their lens is large and situated near the retina . This also alloes a lot register on the retina . Retina contains 2 types of light sensing cells rods and cones.
(iii) Cones are responsible for coloured vision and require bright , focused light.
(iv) Rods are extremely sensitive to light and have a photo sensitive pigment called rhodopsin which plays vital role in night vision.
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