When we migrate from dark to light, we fail to see for some time but after a time visibility becomes normal. It is an example of 

(a) accommodation 

(b) adaptation 

(c) mutation 

(d) photoperiodism 

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1 Answers

The correct option is (b) adaptation.

Explanation:

It takes some time for rhodopsin to split into scotopsin and retinal (bleaching) and release of transmitter passing nerve impulse via bipolar and ganglion cells to the optic nerves. This is a case of adaptation. It differs from accommodation which is a reflex mechanism by which the focus of the eye change to make the images of distant and near objects sharp on the retina.

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