Question

Which insect has blue colour blood?
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Answer 1

Answer:

Snails, spiders and octopi have something in common- they all have blue blood! We're not talking in the sense of royalty, these creatures literally have blue blood. So why is their blood blue and ours red? One of the purposes of blood is to carry oxygen around the body.

Answer 2

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Snails, lobsters and spiders :-

❍ Snails, lobsters and spiders actually have blue blood (properly called haemolymph). The colour comes from the copper atoms in the haemocyanin molecule, which is blue when it is carrying an oxygen atom. It is dissolved directly into their 'blood' instead of being enclosed in blood cells.

❍ Many insects and spiders, however, have blood that is known as hemocyanin, which uses copper to transport oxygen about their bodies and creates a blue tone when it is exposed to the air.