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Classification of Animals with Hemolymph
The animals, having hemolymph in their body, are grouped under the phylum arthropoda, which derives its name from the jointed legs of its member species. This phylum further includes the classes of crustaceans, arachnids, myriapods and insects. All the arthropods species are characterized by jointed limbs and cuticles. As cuticle is a rigid structure and can inhibit growth, it is removed after regular intervals through the process of moulting, whereupon growing a new one over the body.