Neural Control and Coordination Question 60
60. When we migrate from dark to light, we fail to see for sometime but after a time visibility becomes normal. It is an example of
(a) accommodation
(b) adaptation
(c) mutation
(d) photoperiodism
Show Answer
Answer : b
Hints & Solutions
(b) It takes some time for rhodopsin to split into scotopsin and retinal (bleading) and release of transmitter passing nerve inpulse via bipolar and ganglion cells to the optic nerves. This is a case of adaptation. It differs from accomodations 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.
