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, 11:31, 5 September 2011
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'''In some lizards and the tuatara, the paired lateral eyes are augmented by another sense organ.'''
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<FlashCard questions="2">
|q1=What is this organ?
|a1=
The parietal eye.
|l1=
|q2=What is the function of this structure?
|a2=
The parietal eye detects shadows and, thus, perceives the potential threat of predators.
It also serves as a dosimeter of light and, as such, helps regulate the diurnal basking activities of reptiles that possess these accessory light-sensitive organs.
|l2=
</FlashCard>
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