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The eyes of cat, cow, buffalo and some nocturnal animals shine in night. It is due to presence of tapetum lucidum between the chorid and retina. This shining is due to the presence of a pigment made of
A. Cytocine
B. Uracil
C. Guanine
D. Thiamine

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Correct Answer - C
Many nocturnal mammals also have tapetum lucidum which contain lught reflecting crystals of guanine.

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