It is the anatomical part of some animals that do not have an internal skeleton to give the animal solidity (like the bones in mammals do). An exoskeleton can be in the form of a tough inflexible...
Exoskeletons are the "outer" skeletons, where all soft tissues are hidden inside the "shell" or whatever is forming the exoskeleton. Lobsters, crabs, insects, scorpions are examples of creatures with...