Question

An octopus has .

• A. hearts
• B. eyes
• C. arms
• D. all of the above

Hint:

Consider the circulatory, visual and limb related anatomy of an octopus.

Answer 1

The Correct Option is D

This question checks basic knowledge of octopus anatomy.

1. Hearts: An octopus has three hearts. Two pump blood through the gills to pick up oxygen, and the third pumps oxygen rich blood to the rest of the body.
2. Eyes: An octopus has a pair of well developed eyes that can sense light and shape, helping it spot predators and prey, even though most octopus species are considered color blind.
3. Arms: An octopus has eight arms lined with suckers, which it uses to move, grip surfaces and catch food.
4. All of the above: Since hearts, eyes and arms are all genuine features of an octopus, this combined option covers the complete and correct answer.

The correct option is all of the above, because an octopus indeed has three hearts, a pair of eyes and eight arms.

Let's summarize:

• An octopus has three hearts, two for the gills and one for general circulation.
• It also has eyes and eight sucker lined arms, so all three listed features are correct.

So the correct answer is all of the above, option (d).