Biology · PYQ NEET UG 2022
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सही उत्तर · विकल्प 1
काइटीन
व्याख्या
The exoskeleton of arthropods (such as insects, arachnids, and crustaceans) is composed of a tough, protective, and semi-transparent organic substance called chitin. Chitin is a complex polysaccharide (a polymer of N-acetylglucosamine units) that provides structural support and protection to the animal.