Question

Name the Phylum whose member have blue coloured blood

Answer 1

Answer:

The animals you are referring to are categorised under Mollusca and Arthropoda classes. Squid, Octopus, Horseshoe crab and certain insects and their larval stages have blue coloured blood. The reason for the blue colour is that they have the protein 'Haemocyanin' whereas the vertebrates have 'Haemoglobin