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Yes, molluscs fit into the group known as protostomes.
The name of the group or taxon is "phylum", as in phylum Arthropoda. Arthropods are characterized by segmented bodies, an exoskeleton made from chitin, and joint appendages.
Crayfish are members of the crustacean family.
Arthropods are invertabrates (no backbone) which have segmented bodies and limbs. However, some arthropods, such as insects, have 3 body segments. Chelicerata - a group which includes spiders - have 2 segments, the cephalothorax and the abdomen.
No. Millipedes are myriapods, meaning "many feet". Centipedes are also myriapods. Segmented worms are annelids; earthworms and leaches belong to this group. Also, myriapods are arthropods; annelids are not.
Insects are the largest group of arthropods.
Since arachnids are simply a subgroup of arthropods, all characteristics of arachnids are also an example of arthropod characteristics by definition (notwithstanding, all arthropods won't share specific arachnid characteristics).
It is not likely that the annelids evolved from the arthropods is as much as they are the much simpler of the two groups of organisms. The arthropods have a well developed open circulatory system, segmented muscles and a complex nervous system (including eyes and chemoreceptors, the antennae) and an exoskeleton.
Largest group of invertebrates with an exoskeleton. For instance, crustaceans, insects... etc.
all arthropods have the following characteristics :-1. A hard outer body covering called an exoskeleton.2. Specialized mouth parts3. Jointed legs4. Compound Eyes5. Segmented body
Lobsters are in the group of Arthropods.
An insect is an arthropod. Arthropods are a phylum of animals characterized by their jointedappendages, segmented body's, and their exoskeletons, so an insect, arachnid, crustacean, etc. Insects are just part of the larger group the arthropods, but insects are characterized from other classes of arthropods by their six legs, compound eyes, one pair of antennae, and three segmented body (Head, thorax, abdomen).