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Question

Retina has

A
Rods and cones only
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B
Rods only
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C
Cones only
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D
Rods, cones and neuroganglion cells
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Solution

The correct option is D Rods, cones and neuroganglion cells
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.
Apart from these photoreceptor cells, retina also contains ganglion cells. These are nerve cells that transmit visual information to the brain and are known as neuroganglion cells.
So, the correct answer is 'Rods, cones and neuroganglion cells'.

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