Multiple choice general knowledge science & technology

A cockroach has minimum -- knees?

  1. 11

  2. 12

  3. 15

  4. 18
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A cockroach has 6 legs, and each leg has 3 main joints that could be called 'knees' (femur-tibia joint and others), giving them a total of 18 knee-like joints. This is a common biological trivia fact about cockroach anatomy. Each joint allows for the flexible movement that makes cockroaches so mobile.

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