Fundamentholfundamenthol
NEET2023Biology
Q.

Match List I with List II with respect to human eye.

List IList II
A. FoveaI. Visible coloured portion of eye that regulates diameter of pupil.
B. IrisII. External layer of eye formed of dense connective tissue.
C. Blind spotIII. Point of greatest visual acuity or resolution.
D. ScleraIV. Point where optic nerve leaves the eyeball and photoreceptor cells are absent.

Choose the correct answer from the options given below:

  1. A

    A-III, B-I, C-IV, D-II

  2. B

    A-IV, B-III, C-II, D-I

  3. C

    A-I, B-IV, C-III, D-II

  4. D

    A-II, B-I, C-III, D-IV

Solution

Fovea: densely packed cones — site of sharpest vision (A–III). Iris: pigmented diaphragm that controls pupil diameter (B–I). Blind spot: where the optic nerve exits and photoreceptors are absent (C–IV). Sclera: tough outer fibrous coat of the eyeball (D–II).

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