Following are the steps of mechanism of vision in random or…

Biology Neural Control and Co-ordination Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Following are the steps of mechanism of vision in random order.

(I) Neural impulses are analysed and image formed on retina is recognised by visual cortex.

(II) Membrane permeability changes.

(III) Ganglion cells are excited.

(IV) Bipolar cells are depolarised.

(V) Action potential (impulse) is transmitted by optic nerves to visual cortex.

(VI) Potential differences are generated in the photoreceptor cells.

(VII) Light energy causes a change in shape of rhodopsin, leading to the dissociation of retinal (an aldehyde of

vitamin-A) from opsin (a protein).

(VIII) Structure of opsin is changed.

Choose the correct sequence.

I, II, III, IV, V, VI, VII, VIII

VIII, VII, VI, V, IV, III, II, I

I, IV, III, II, VII, VIII, VI, V

VII, VIII, II, VI, IV, III, V, I

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