Note that in some texts the subphyla may be referred to as classes; occasionally the taxonomic discipline appears somewhat fluid.
Arthropoda has subphyla Chelicerata, Myriapoda, Crustacea, and Hexapoda. (There is also an extinct class Marrellomorpha and an the extinct Trilobite subphylum). The chelicerata, like Spiders, scorpions, mites, etc., get their name from having appendages appear before the mouth; myriapods like centipedes and millipedes characterized by a high count of body segments and legs; crustaceans like crabs, shrimp, woodlice characterized by their biramous (two-part) limbs and a specialized larval form; hexapoda named for their consolidated thorax with only three pairs of legs.
Classes below phylum Arthropoda could be selected from these subphyla; for example classes Arachnida, Chilopoda, Branchiopod, Insecta, and Malacostraca - but there are many more classes.
The arthropods are a phylum, a larger division than a class. Arthropoda has classes within it.
All arthropods by definition belong to phylum Arthropoda.
All insects are arthropods. The phylum Arthropoda contains the classes Insecta (insects), Crustacea (crabs, lobsters, etc), Chelicerata (arachnids) and a few others.
Some animals in phylum arthropods is a spider, centipedes or crabs.
All insects are in the phylum of Arthropods.
"Arthropods"
arthropods
In taxonomy, arthropods would not be an order but a much larger grouping called a phylum (phylum Arthropoda). Taxa are hierarchical, with the smaller divisions below phyla being subphyla, and within them, the classes/subclasses, then below that, the Orders. You might say that phylum Arthropoda has a lot of orders "inside it."
No. Arthropods are members of the phylum Arthropoda; but hydrae are members of the phylum Cnidaria. The closest to a "common" term for animals in this phylum that exists is "cnidarians".
The opposite of arthropods would be non-arthropods or invertebrates that do not belong to the phylum Arthropoda.
The largest phylum in the animal kingdom is Arthropoda, which includes insects, spiders, crustaceans, and other related organisms. It is estimated that over 80% of described animal species belong to this phylum.
Arthropods.