Assertion (A): Chitinous exoskeleton of arthropods that is responsible for their evolutionary success is made up of lipoglycans.
Reason (R): Building blocks of chitin are chemically modified amino sugars (N-acetyl glucosamine).
Chitin is a structural polysaccharide composed of repeating units of N-acetyl glucosamine, which is a modified amino sugar .
It forms the exoskeleton of arthropods, contributing to their protection and evolutionary success.
Thus, both Assertion and Reason are correct, and Reason explains the chemical basis of chitin.
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