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Model Paper 10 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 104 Marks
MCQ
Blind spot is called so because of
  • A
    the presence of photoreceptor cells.
  • B
    the absence of optic nerves.
  • C
    the absence of photoreceptor cells.
  • D
    the presence of optic nerves.
✓

Answer

C. the absence of photoreceptor cells.
Explanation:
 The optic nerves leave the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eyeball. Photoreceptor cells are not present in that region and hence it is called the blind spot. At the posterior pole of the eye, lateral to the blind spot there is a yellowish pigmented spot called macula lutea with a central pit called the fovea.

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