In human eye, the blind spot contains

Rods

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Cones

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Both rods and cones

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Neither rods nor cones

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Solution

The correct option is D Neither rods nor cones
The retina of eye has two types of photoreceptor cells: rods and cones.
Rods are the photoreceptor cells that contain rhodopsin pigment and associated with scotopic vision of eye i.e. vision under low light.
Cones are the photoreceptor cells that contain iodopsin, porpyrosin and cyanopsin pigments. These cells are associated with the daylight vision and colour vision of eyes.
Blind spot is the region in eye where no photoreceptor cells are present.
So, the correct answer is 'Neither rods nor cones'.

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Q. Match the following columns and select the correct option:

	Column I		Column II
(a)	Rods and cones	(i)	Absence of photoreceptor cells
(b)	Blind Spot	(ii)	Cones are densely packed
(c)	Fovea	(iii)	Photoreceptor cells
(d)	Iris	(iv)	Visible coloured portion of the eye

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