Understanding Octopus Circulatory System

What is the primary difference between octopi and other mollusks?

• Octopi are classified as mammals.

• Octopi have an open circulatory system.

• Octopi are faster due to their open circulatory system.

• Octopi have a closed circulatory system.

What protein is responsible for the blue-green color of octopus blood?

• Myoglobin

• Hemoglobin

• Chlorophyll

• Hemocyanin

How many hearts does an octopus have?

• One

• Two

• Four

• Three

What is the role of the branchial hearts in an octopus?

• To pump blood to the tentacles

• To pump blood to the brain

• To pump blood to the gills

• To pump blood to the body

Which heart in an octopus is responsible for pumping blood to the body?

• Branchial heart

• Systemic heart

• Pulmonary heart

• Ventricular heart