2006-12-28 17:24:28 · 8 answers · asked by Derrick 1 in Science & Mathematics ➔ Biology
no. blood is not even closed system in some animals as we humans have.
humans have veins and arteries forming closed system. in cockroaches there are no veins and the organs are surrounded by the blood. the blood of the cockroach is white in colour
2006-12-28 17:33:15 · answer #1 · answered by sam 2 · 0⤊ 0⤋
Blood is not actually blue. The veins look blue through the skin because of differential absortion of light by the layers of skin. Venous blood is dark red (as you can see when blood is drawn into a syringe directly from a vein). Arterial blood is bright red. Vertebrates have the iron compound hemoglobin in their red blood cells, which is what makes them red. But some marine invertebrates use a copper compound, hemocyanin, for oxygen transport instead of hemoglobin, and their blood is consequently green.
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2006-12-28 17:33:12 · answer #2 · answered by PaulCyp 7 · 0⤊ 0⤋
Not all animals have red blood. The colour to blood is due to the presence of Hemoglobin. Generally warm blooded animals contains hemoglobin in their blood so they have red blood in their body. Some creatures do not have hemoglobin in their blood for example cockroach. Cockroach have white blood. In red blooded animals also there is a difference in colour. The blood with Oxygen is one type of red. The blood without Oxygen(with co2)is blakish red.
2006-12-28 17:46:42 · answer #3 · answered by RAM K 1 · 0⤊ 0⤋
Without going into details.
technically theres only 3 blood colors in this world.
Red mainly for mammals
brown and blue blood for sea creatures.
Brown = Crabs, lobsters
Blue = Squids, some clams...
2006-12-28 17:38:39 · answer #4 · answered by mark k 3 · 0⤊ 0⤋
Blood is actually blue till it hits the air!
2006-12-28 17:27:06 · answer #5 · answered by Brian Z 2 · 0⤊ 0⤋
our blood is red because of the iron in our blood...
some bugs have green blood because of the copper. when the blood hits oxygen, the copper in the blood turns green.
2006-12-29 08:09:21 · answer #6 · answered by DeceptiConservative 4 · 0⤊ 0⤋
Mr. Spock of Star Trek had green blood.
2006-12-28 17:26:08 · answer #7 · answered by mr.answerman 6 · 1⤊ 0⤋
blood is blue in your veins but turns red in the air
2006-12-28 17:28:00 · answer #8 · answered by Kristen C 1 · 0⤊ 0⤋