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Phylum Arthropoda
It is the largest phylum in the animal kingdom, including 9000,000 species...
Science [12], Zoology, Central Board of Secondary Education 1/5/2010
Tags: Largest Phylum, Triploblastic Coelomate, Haemolymph, Chitinous, Ecdysis, Chitinous Exoskeleton, Respiratory Organs, Tracheal System, Ventral Nerve Chord, Annelida, Metamorphosis, Ametabolous Development, Imago, Paurometabolous Development, Hemimetabolous Development, Caterpiller, Wriggler, Gurb, Types of Mouthparts, Labrum, Labium, Mandibles, Maxillae