NEET2023ZoologyNeural Control and CoordinationActual
Match List I with List II: List I List II A. Fovea I. Visible coloured portion of eye that regulates diameter of pupil. B. Iris II. External layer of eye formed of dense connective tissue. C. Blind spot III. Point of greatest visual acuity or resolution. D. Sclera IV. Point where optic nerve leaves the eyeball and photoreceptor cells are absent Choose the correct answer from the options given below:
Options
- AA-II, B-I, C-III, D-IV
- BA-III, B-I, C-IV, D-II
- CA-IV, B-III, C-II, D-I
- DA-I, B-IV, C-III, D-II
Correct answer
B. A-III, B-I, C-IV, D-II
Step-by-step solution
Fovea 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. The fovea is a thinned-out portion of the retina where only the cones are densely packed. It is the point where the resolution is the greatest. Iris The continuation of the ciliary body forward to form a pigmented and opaque structure called the iris which is the visible coloured portion of the eye. Blind spot The optic nerves leave the eye and the retinal bl