Arthropods have segmented bodies, an exoskeleton made from chitin, and joint appendages. They also have an internal body cavity (hemocoel) and an open circulatory system which employs hemolymph.
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1. All arthropods are invertebrates that have an exoskeleton made mostly of chitin.
2. All arthropods are bilaterally symmetrical.
3. All arthropods have jointed legs.
Jointed legs, exoskeleton, growth by molting.
Comparten muchas características, es decir, son similares porque no tienen columna vertebral sino exoesqueleto y otros tienen cuerpo y patas articuladas y más características.They share many characteristics, that is, they are similar because they do not have a spine but an exoskeleton and others have articulated body and legs and more characteristics.
Invertebrateexoskeletonsegmented body
Tarantulas and other spiders are classified as arthropods by virtue of their physical characteristics. In taxonomic classification arthropods branch into two major subcategories, the chelicerates which include arachnids, and the mandibulates which includes the myriapods, crustaceans and insects. These all share the broad definition of arthropoda which is characterized by joint appendages and possession of an exoskeleton.
Yes, by definition all arthropods are taxonomically related in the sense that they share membership in the same phylum (Arthropoda); although this does not necessarily mean they share a common ancestor.