Do arachnids have exoskeleton

Yes, arachnids possess an exoskeleton, which is a hard outer structure made of chitin. This exoskeleton provides support, protection, and a barrier against water loss. It is a key characteristic of arthropods, the group to which arachnids belong, which also includes insects and crustaceans. The exoskeleton must be periodically shed and renewed through a process called molting as the arachnid grows.