give me a definition of arthropoda for writing in the exam.
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a large phylum of invertebrate animals that includes insects, spiders, crustaceans, and their relatives. They have a segmented body, an external skeleton, and jointed limbs, and are sometimes placed in different phyla
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5 Characteristics of an Arthropod
Exoskeleton. Arthropods are invertebrates, which means their bodies do not have internal bones for support. ...
Segmented Bodies. Arthropods have bodies that are internally and externally segmented. ...
Jointed Appendages. ...
Bilateral Symmetry. ...
Open Circulatory System.Any invertebrate of the phylum Arthropoda, having jointed limbs, a segmented body, and an exoskeleton made of chitin. The group includes the crustaceans, insects, arachnids, and centipedes.
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