chitin
Yes, corals are composed of an exoskeleton
A butterfly has an exoskeleton. The exoskeleton appears when the caterpillar undergoes the metamorphosis process. It is the pup that dissolves and becomes the exoskeleton.
Arthropod have exoskeleton. The exoskeleton is composed of a thin, outer protein layer, the epicuticle, and a thick, inner, chitin–protein layer.
Case or shell dependant on the insect other names may apply.
yes
The tiny exoskeleton of a diatom is mostly composed of silica, which is a form of silicon dioxide. This silica shell gives diatoms their characteristic glass-like appearance and provides protection for the cell inside.
Diatom exoskeletons, or frustules, are made from silica. To get a clearer insight into this material Go to the related link (AFM maps the diatom exoskeleton) below.
Yes, exoskeletons are made up of a hard outer layer that provides structural support and protection to the animal's body. This outer layer is composed of chitin, a tough fibrous substance that forms a framework for the exoskeleton.
The "shell" of the crayfish, or rather its exoskeleton, is composed of the polysaccharide chitin and some lipids. There are also some calcium salts in the exoskeleton of the crayfish, which gives it its firmness.
The armor of a grasshopper is an exoskeleton made of chitin, providing protection and support to its body. In contrast, a starfish does not have an exoskeleton but instead has a hard calcium carbonate skeleton underneath its skin, known as ossicles, for structural support.
The outer layer of a sea shell is called the exoskeleton or the shell's outer casing. It is composed of calcium carbonate and provides protection for the soft tissues of the animal inside.
they have exoskeleton