Grp 4 Anthropodo-crustacea

Crustaceans form a very large group of arthropods. They include animals such as crabs, lobsters and shrimps.They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates by the possession of two-parted limbs. The body of a crustacean is made up of 3 parts - the head, the thorax, and the abdomen.The majority of crustaceans are aquatic, living in either marine or fresh water environments, but a few groups have adapted to life on land, such as terrestrial crabs