Which of the following animal has blue blood?
Correct answer: D. All of above
- A. Snail
- B. Octopus
- C. Spider
- D. All of above
Explanation
Snails, octopuses and spiders can have bluish blood because their oxygen-carrying pigment is copper-based haemocyanin rather than iron-based haemoglobin. Therefore all three listed animals fit.
Last updated