What is characteristics of crustaceans?

Answer 1

Crabs and crayfish are crustaceans, a subdivision of arthropods - the large group of animals without backbones (invertebrates) that includes insects, Spiders, mites, scorpions and springtails. Arthropods have jointed legs and a hard outer shell that acts as a skeleton.

Answer 2

The crustacean is the name of any of various predominantly aquatic arthropods of the class Crustacea, including lobsters, crabs, shrimps, and barnacles. They have a segmented body, formed of a head, a thorax and an abdomen called (pleon). a chitinous exoskeleton, and paired, jointed limbs. The crustaceans are also distinguished by having two pairs of antenna-like appendages in front of the mouth and other paired appendages near the mouth that act like jaws.

Answer 3

Crustaceans have two antennae, two maxillae, a pair of mandibles, and biramous legs. They have an exoskeleton. They breathe using gills, and their thorax is protected by a special plate of exoskeleton called a carapace.

Answer 4

Two pairs on antennae on the front of the body

Two distinct body regions (cephalothorax and abdomen)

Two or more pairs of appendages

Most often, gills for breathing

Answer 5

Very thick shell

Answer 6

They have hard shells on their outside.

Answer 7

They have shells like crab