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According to the given passage, the mixing of yellow pigment with blue colour results in which of the following colours?

  • A.Buff
  • B.Brown
  • C.Green
  • D.black

Answer: C

Yellow pigment mixed with blue colour gives green. The passage says: ‘Most greens result from the addition of yellow pigment to the structural blue colour.’

Buff, brown and black are caused by melanins, as the passage states in its first sentence, not by this mixing.

The passage explains that blues in feathers are structural, based on a thin layer of keratin over melanin, and that greens come from adding yellow pigment to this structural blue. The question uses the same terms, so the answer is green and not one of the melanin colours.

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