Under the arthropoda phylum are subphyla Chelicerata, Myriapoda, Crustacea, and Hexapoda. There is also an the extinct Trilobite subphylum (and an extinct class Marrellomorpha). The chelicerata include Spiders, scorpions, mites, etc. Myriapods include centipedes and millipedes. Crustaceans include lobsters, krill, crabs, shrimp, woodlice, etc. Hexapoda include the class Insecta, the insects.
Vertebrates and invertebrates.
they have spines. spines are vertebrates they are not invertebrates.
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arthropods
Vertebrates and Invertebrates
Invertebrates can be divided into 5 groups. Insects Arachnids Crustaceans Worms Molluscs
The two major groups of animal classification are vertebrates and invertebrates. Vertebrates have a backbone or spine, while invertebrates do not. Examples of vertebrates include mammals, birds, reptiles, amphibians, and fish, while invertebrates include insects, arachnids, mollusks, and annelids.
The animal kingdom is divided into smaller groups called vertebrates and invertebrates. Vertebrates are those animals with backbones and endoskeletons and invertebrates lack a backbone and generally have the skeleton on the outside of their bodies.
shells are important to some invertebrates groups because for some of them, that's their home
you can put them in any groups, but the 2 main groups you are looking for are called = invertebrates and invertebrates (vertebrates have bones and invertebrates don't have any bones)
the 8 groups of invertebrates are the arthropods, poriferans, platyheminthes, coelenterates, nematoeds, mollusks, echinoderms, and annelids
Invertebrates can be broadly categorized into several groups, including arthropods (insects, spiders, crustaceans), mollusks (snails, clams, octopuses), annelids (earthworms, leeches), cnidarians (jellyfish, corals), and echinoderms (starfish, sea urchins). These groups represent some of the major phyla of invertebrates that exist in the animal kingdom.
The two major groupings within the animal kingdom are invertebrates (animals without a backbone) and vertebrates (animals with a backbone). Invertebrates make up the majority of animal species and include insects, worms, and mollusks, while vertebrates include mammals, birds, reptiles, amphibians, and fish.
vertebrates and invertebrates
The 8 groups of invertebrates are as follows: PoriferaCnidariaNemathelminthesPlatyhelminthesAnnelidaArthropodaMolluscaEchinodermata
Probably invertebrates and vertebrates (although "chordates" is better for vertebrates) since the two groups are technically distinguished by the presence of a ventral cord in the invertebrates and a dorsal nerve cord (in their back). All but a few minor groups of chordates have their dorsal nerve cord protected by vertebrae so commonly, most people say invertebrates and vertebrates (until high school and college).