11. Give an account on phylum Arthropoda.
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Phylum Arthropoda is the largest phylum in the animal world, and insects form the single largest class within this phylum. Arthropods are eucoelomate, protostomic organisms. Phylum Arthropoda includes animals that have been successful in colonizing terrestrial, aquatic, and aerial habitats.
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1. Largest Phylum
2. Has jointed appendages- head, thorax, abdomen
3.Consists of about 9 lakh species
4.This phylum includes several large classes and contains the class Insecta which itself represents a major portion of the animal species in the world.
5.Arthropods are invertebrate animals having an exoskeleton, a segmented body
6.The term Arthropoda as originally proposed refers to a proposed grouping of Euarthropods and the phylum Onychophora
7.They are distinguished by their jointed limbs and cuticle made of chitin, often mineralised with calcium carbonate.
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