The eyes of cat, cow, buffalo and some nocturnal animals
shine in night. It is due to the presence of tapetum lucidum
between the choroid and retina. This shining is due to the
presence of a pigment made of

Cytocine

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Uracil

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Guanine

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Thiamine

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Solution

The correct option is C Guanine
Many nocturnal mammals also have tapetum lucidum which contain light reflecting crystals of guanine.

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Tomatoes, carrots and chillies are red in colour due to the presence of one pigment. Name the pigment. Is it a photosynthetic pigment?

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