what is the external rigid carapace of arthropods, Biology

what is the external rigid carapace of arthropods

What is the external rigid carapace of arthropods called? Of which substance is it made? Which type of organic molecule is that substance?

The external carapace of arthropods is known as exoskeleton. The arthropod exoskeleton is made of chitin, a nitrogen-containing polysaccharide.

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