The vertebrae of which of the following organisms are completely devoid of haemoglobin?

Keep practicing — related questions

• The only vertebrate whose blood does not contain haemoglobin.
• The blood of which of the following organisms is colourless?
• The first free-living organism to have its genome completely sequenced was a red alga. Which of the followi...
• A gill is a respiratory organ found in many aquatic organisms which helps in breathing. Which among the fol...
• Which of the following organs is/are ectodermic in origin?
• In which of the following binary trees is every level, except possibly the last, completely filled?
• Which of the following is not a vestigial organ?
• Which of the following sets of structures includes only analogous organs?