Exoskeletons Oh My!


Cracking the Shell

The arthropod is an invertebrate animal that has an exoskeleton, and a segmented body with jointed appendages and many pairs of jointed legs. They also have bilateral symmetry. Arthropods include insects, arachnids, and crustaceans, like crabs and cray fish. Arthropods make up about 80% of the world's animals, so this category is very large and vary's in different animals, and not one is the same. The habitat of arthropods include the flat woods and the local pastures. Arthropods habitat also include lakes and bay heads. Seasonal ponds are another habitat. Predators of arthropods include humans, fish, whales, squids, small birds, and bats. The scientific name of arthropods is arthropoda. Arthropods eat fungi, plants, scraps, small fish, insects, small rodents, and many more things. Some arthropods grind down wood and some help farmers with the soil. Each arthropod has a specific job in the biosphere. There are 4 classifications of arthropods myriapods, crustacea, hexapoda, and chelicerata.

Taxonomy of Arthropods

Kingdom: Animalia

Phylum: Arthropoda

Arthropods have many sub-phylum.

Arthropods are inverterbrates with segmented bodies and jointed limbs. The limbs form part of an exoskeleton, which is mainly made of α-chitin, a derivative of glucose. One other group of animals, the tetrapods, has jointed limbs, but tetra-pods are vertebrates and therefore have endoskeletons.

Facts, You'll Be Glad You Know

|1| The first land animals

|2| Go through metamorphosis

|3| Arthropods evolved about 500 million years ago

|4| There are more than 30 million species of arthropods

Insects & Arthropods


During this lab we just observed a cray fish and grasshopper and labeled the parts.

Integumentary System

We focused on the integumentary system mainly because we couldn't dissect the arthropods, so we had to observe it and look at the exoskeleton. The integumentary system is important because just like the skin, the exoskeleton of the arthropod helps protect it from harm.
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