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Question

Proteus anguinus is an example for

A
Circannual rhythms
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B
Effect of light on pigmentation
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C
Phototaxis
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D
Photokinesis
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Solution

The correct option is B Effect of light on pigmentation
The Proteus anguinus or the cave salamander is a rare amphibian with an unusual appearance, shaped by several million years of living in dark caves in central Europe. It's skin lacks pigment, giving its body a white, pasty appearance. It also has a pink hue due to blood capillaries near the skin, and as its translucency shows the contours of the internal organs.
So, it is considered to be a good example to study the effects of light on pigmentation.
Thus, the correct answer is option (B).

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