The exoskeleton of arthropods is composed of:
A) chitin.
B) silica.
C) cellulose.
D) calcium carbonate.
E) starch.

Question

Quizplus · Accepted Answer

The exoskeleton of arthropods, including insects, spiders, and crustaceans, is composed primarily of chitin, a tough polysaccharide that provides support and protection for the animal's body. Chitin is also found in the cell walls of fungi and the beaks of squid and other cephalopods. Silica, calcium carbonate, and cellulose are also used to build skeletons in other organisms, but they are not typically found in arthropod exoskeletons. Starch is a carbohydrate used for energy storage and is not a component of exoskeletons.

The Exoskeleton of Arthropods Is Composed Of