A comb-like vascular structure pectin, used for nourishment and focussing in the eyes of
A
Amphibians
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B
Birds
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C
Mammals
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D
Reptiles
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Solution
The correct option is C Birds In the eye of the bird, a comb-like structure is present. It is called as pectin. It is soft and vascular. It is a rectangular plate. It projects into the vitreous humor from the blind spot. So, the correct answer is option B.