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Q: Which of the following animals has more than one heart?
  • A. Porcupine
  • B. Chameleon
  • C. Tortoise
  • D. Octopus
Correct Answer: Option D - Octopus have more than one heart. An Octopus has one main, systemic heart that pumps blood to the whole of its body. But it also has two additional hearts, responsible for pumping blood over each of its gills.
D. Octopus have more than one heart. An Octopus has one main, systemic heart that pumps blood to the whole of its body. But it also has two additional hearts, responsible for pumping blood over each of its gills.

Explanations:

Octopus have more than one heart. An Octopus has one main, systemic heart that pumps blood to the whole of its body. But it also has two additional hearts, responsible for pumping blood over each of its gills.