Multiple choice general knowledge sports

How many hearts does an octopus have?

  1. 1

  2. 2

  3. 3

  4. 4

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An octopus has three hearts - two branchial hearts that pump blood through the gills, and one systemic heart that pumps blood to the rest of the body. This is a unique feature of their circulatory system.