Multiple choice general knowledge

What is the rhino’s horn made of?

  1. IVORY

  2. MUSCLE

  3. HAIR

  4. CALCIUM
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rhino horns are composed entirely of keratin, the same fibrous protein that makes up human hair and fingernails. They contain no ivory, muscle, or calcium deposits. The horn grows continuously throughout the rhino's life.

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