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Do All Animals Have Red Blood?

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enotes | (Level 1) Valedictorian

Posted October 9, 2011 at 4:00 PM via web

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Do All Animals Have Red Blood?

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anjali989 | Student, Grade 10 | (Level 1) Honors

Posted September 6, 2012 at 7:54 AM (Answer #1)

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The color of blood is related to the compounds that transport oxygen. Hemoglobin, containing iron, is red and is found in all vertebrates (animals having a backbone) and a few invertebrates (animals lacking a backbone). Annelids (segmented worms) have either a green pigment, chlorocruorin, or a red pigment, hemerythrin. Some crustaceans (arthropods having divided bodies and generally having gills) have a blue pigment, hemocyanin, in their blood-we have several examples of animals that don’t have them.     

Antartic Ice Fish (family Channichthyidae) don’t have ‘red’ blood cells because they don’t have hemoglobin – hemoglobin doesn’t work very well at cold temperatures.

Insects (like many other invertabrates) have hemocytes (an equivalent to a red blood cell). They are bluish in color because of the hemocyanin they contain.

Lobsters and crabs (among other crustaceans) use hemocyanin dissolved in their plasma to transport oxygen – they have no red blood cells at all!There are others but better yet I can give you two WHOLE divisions of animals without blood cells. The Platyhelminthes (Flatworms) and the Nematoda (Nematodes) don’t even have circulatory systems!

 I think less might be the case as insects alone account for nearly 10 million species!


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fact-finder | (Level 3) Valedictorian

Posted October 10, 2011 at 4:00 PM (Answer #2)

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Not all animals have red blood. The color of blood depends upon the type of compound or respiratory pigment within the blood that transports oxygen from the lungs to the tissues. In all vertebrates (animals having a backbone) and a few invertebrates (animals lacking a backbone), an iron-containing protein called hemoglobin is responsible for oxygen transport. Hemoglobin is a red pigment and gives the blood a red color.

Annelids (segmented worms) have either a green pigment, chlorocruorin, or a red pigment, hemerythrin. Some crustaceans (invertebrates with jointed bodies, such as crabs and shrimps) have a blue pigment, hemocyanin, in their blood. Cockroaches have no respiratory pigment, thus their blood is colorless.

Source: New Encyclopaedia Britannica, 15th ed., vol. 2, p. 290.

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school-help-needed | Student | (Level 1) Honors

Posted April 13, 2012 at 7:45 AM (Answer #3)

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Reply to fact-finder: Omg cool! I'm gonna go kill a cockroach!

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television123 | Student, Grade 9 | (Level 1) Honors

Posted June 21, 2012 at 1:56 PM (Answer #4)

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no all animals don't have red blood 

some have green like grasshopper is the best example etc.

 

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Yojana_Thapa | Student, Grade 10 | (Level 1) Valedictorian

Posted January 27, 2014 at 12:53 AM (Answer #5)

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No, not all animals have red blood.

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Jyotsana | Student, Grade 10 | (Level 1) Valedictorian

Posted February 22, 2014 at 11:50 PM (Answer #6)

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All animals does not have red blood.

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nicole8923 | Student, Grade 10 | (Level 1) Salutatorian

Posted February 26, 2014 at 7:56 PM (Answer #7)

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Not all animals have red blood.

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atyourservice | Student, Grade 10 | (Level 3) Valedictorian

Posted March 31, 2014 at 10:57 PM (Answer #8)

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not all animals have red blood.

 
 
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zumba96 | TA , Grade 11 | (Level 2) Valedictorian

Posted May 17, 2014 at 9:26 PM (Answer #9)

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Not all animals have red blood. Lobsters and crabs are known to have blue blood. Leeches and earthworms have green blood. Invertebrates usually have blue blood and some animals don't even need their blood to function or live. 

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ik9744 | TA , Grade 9 | (Level 1) Valedictorian

Posted July 21, 2014 at 5:19 PM (Answer #10)

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Not all animal have red blood.

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givingiswinning | Student, Grade 10 | (Level 1) Valedictorian

Posted July 31, 2014 at 12:05 PM (Answer #11)

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No, not all animals have red blood.

 
 

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