Question

Why does the snail contains blue blood ....?​

Answer 1

Explanation:

The blue comes from a copper-rich protein called hemocyanin, which carries oxygen from the lungs to the bloodstream and then to the cells of the octopus's body. Hemoglobin, an iron-containing protein found in the blood of other animals—including humans—serves the same oxygen-transporting function but turns blood red.

hope it helps you ✌️✌️

Answer 2

Answer:

Unlike mammals, snails, spiders and octopi do not use hemoglobin to transport oxygen but rely on a related compound known as hemocyanin. ... Hemocyanin absorbs all colours except blue which it reflects, making their blood appear blue.