Crustaceans are covered with a thick exoskeleton and have a bilaterally symmetrical body. Crustaceans also have segmented bodies that include a head, a thorax, and an abdomen. The head and thorax are often joined together in a cephalothorax. The only appendage that all crustaceans have in common is two sets of antennae.
abdomen
Abdomen
The kid of coelom crayfish have are a cephalothorax and the abdomen. Crayfish are crustaceans which live in freshwater and closely resemble lobsters.
Crabs belong to the family "Brachyura," which is a group of decapod crustaceans. They are characterized by having a short abdomen and a broad body.
A lobster is a crustacean. Crustaceans are a type of Arthropod which is an invertebrate. Crustaceans have a hard, external shell which protect their bodies. Crustaceans have a head and abdomen. The head of a crustacean has antennae which are part of their sensory system. The abdomen includes the heart, digestive system and reproductive system. The abdomen also has appendages, such as legs, for crawling and swimming. Many crustaceans also have claws that help with crawling and eating.
head, thorax, and abdomen
The phylum that includes animals with a head, thorax, and abdomen, and three or more pairs of legs is Arthropoda. This phylum encompasses a wide range of invertebrate animals, including insects, spiders, crustaceans, and millipedes.
A common shiny woodlouse, also known as the common pillbug or roly-poly, has three main body sections: the head, thorax, and abdomen. Additionally, it has a total of 14 segments in its body, including the segmented abdomen. This structure is typical of crustaceans, to which woodlice belong.
Crustacea typically have two main body segments: the cephalothorax and the abdomen. The cephalothorax is a fused region that combines the head and thorax, while the abdomen is distinct and usually segmented. Some crustaceans may exhibit variations, but the two-segment structure is generally consistent across the group.
Insects must have a head, thorax, and abdomen. They have three pairs of legs and usually two pairs of wings. The crayfish obviously doesn't have wings, (not sure about the other requirements) so it is not an insect.
Crustaceans are omnivores.
The three main parts are: cephalon or head; thorax, and abdomen.