Question

Problem 19

Answer 1

Background and context

Arthropod includes around 80% of the creatures that cover under the kingdom Animalia.  Crustaceans have their  unique characteristics that  are different from other arthropods. Crustaceans are derived form a large and diverse arthropod taxon that includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles. A crustacean has the following features:

• A segmented body with cover a hard exterior (known as an exoskeleton)

• Jointed limbs and with two branches in each (termed biramous)

• Two pairs of antennae

• Gills