Which of the following animals has more than one heart?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Octopus.
- Octopuses or octopi are one of the most well-known animals with multiple hearts.
- There are hundreds of species of octopus, but all have three hearts: one heart to pump their blood throughout their circulatory system, and two to pump blood through their gills.