Multiple choice general knowledge history

What is the rhino’s horn made of?

  1. Hair

  2. Ear

  3. Nose

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A rhino's horn is made of keratin, the same protein that constitutes human hair and fingernails. It's not made of bone, cartilage, or other tissues. The horn grows from the skin and is not attached to the skull. This is a unique biological fact about rhinoceroses. Option A 'Hair' is the closest match as both horn and hair are keratin-based.

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