: Understanding the influence of light on various beings #IndiaNEWS #Education Today Hyderabad: Influence of light on vision & behavior: Light is essential for vision, to procure food, self-protection,

Understanding the influence of light on various beings #IndiaNEWS #Education Today
Hyderabad: Influence of light on vision & behavior:

Light is essential for vision, to procure food, self-protection, identification and selection of mate for sexual reproduction.
Light also influences the behavior of organisms
Some animals are active during the day time are called diurnal animals. Example: Majority of birds, reptiles, mammals.
Some animas are active during night time are called Nocturnal animals. Example: Earthworms, cockroaches, etc.

Effect of light of Metabolism: The intensity of light influences the rate of metabolism in animals. At lower intensities of light the rate of metabolism slows down, where as in higher intensities it increases.
Effect of light on biological rhythms:

By definition rhythm is a change that is repeated with similar pattern in a time frame.
In the bodies of organisms many behavioral activities are repeated at regular intervals and these are called biological rhythms.
Biological rhythms that occur in a time period of 24 hours are circadian rhythms if the biological rhythms repeat annually (every year), they are called circannual rhythms.
They are controlled by “biological clockp????[?[?X[?H]?[????[????Y??H??H[??][????][??H?[???X?[???????Y??X?????[??[?[X[?
???[??JN???H?][??HY?????^???H?Y?[?H^H????????[?H????H???[?????H???[???[Y???[??K???H????H????[??[??[???????X?[?[????]?[
??X?[???????HZY?][?????]?B?H?X?Y?X?^H[???X????[?X[??H[?]X][???X??[]?[????[Y8?'?]X?[???[?8??H[????]X?[???[????H?[YH[?[H?X?Y?]??Y????H?X?Y???X?Y?[?[???][?H?[YH?X?Y?[?X?][?????[??]]Y?????^[N??[??[???]?[??X??XKHY?]?Z[X?H[YH?[?[?H^HX?X??[?????YH???ZY?]H[H?^H?H?]??YY[??[???YY[????[??[???[?????[?XK????[?]??[[Y?[YH?X??[??X??XK^HZY?]H?X???Z??Y[[??????N?^???H?[?[??????[??[?H?[?HY?Y???[?H^H[?X???YYHX]?]H[?HY??^Z[???????]??[Z[X?^[H?[??????[?[Z[???[??N?????X?[??Y??H??Z[?]?[????[?????[Y?[?[Z[???[??K???HY?[Z]Y?H]?[????[????]??Y?[????Y?^?[???]??[Y8?'??Y?8??^[N???YH?[Y????Y?X[?K?Y]???
[??[Y
K??Y?H
???
K?]ZY
[??JK????XH
?????]JH[???YH????]??[Y]?Y?[??Y[??HY?H[?H??X?]]?H??Y[??[???X?Y?X???[][?X?][??^X[]?X?[?]?X?[??H?^K?[?[????X?]?H???[???Y?[?]?